U.S. patent application number 17/371965 was filed with the patent office on 2021-11-04 for resource configuration method and apparatus.
The applicant listed for this patent is HUAWEI TECHNOLOGIES CO., LTD.. Invention is credited to Lei CHEN, Fengwei LIU, Qiqi MAO, Shitong YUAN.
Application Number | 20210345345 17/371965 |
Document ID | / |
Family ID | 1000005756067 |
Filed Date | 2021-11-04 |
United States Patent
Application |
20210345345 |
Kind Code |
A1 |
LIU; Fengwei ; et
al. |
November 4, 2021 |
RESOURCE CONFIGURATION METHOD AND APPARATUS
Abstract
This application provides a resource configuration method and
apparatus. A multiplexing type between a second functional unit and
each of one or more antenna panels of a first functional unit is
indicated to an IAB node, so that the IAB node obtains a resource
configuration of an MT or a resource configuration of a DU based on
the multiplexing type. This helps implement a resource
configuration in the IAB node in a case of a plurality of antenna
panels.
Inventors: |
LIU; Fengwei; (Chengdu,
CN) ; MAO; Qiqi; (Shenzhen, CN) ; YUAN;
Shitong; (Chengdu, CN) ; CHEN; Lei; (Shenzhen,
CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
HUAWEI TECHNOLOGIES CO., LTD. |
Shenzhen |
|
CN |
|
|
Family ID: |
1000005756067 |
Appl. No.: |
17/371965 |
Filed: |
July 9, 2021 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
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PCT/CN2020/071735 |
Jan 13, 2020 |
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17371965 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H04W 72/0493
20130101 |
International
Class: |
H04W 72/04 20060101
H04W072/04 |
Foreign Application Data
Date |
Code |
Application Number |
Jan 11, 2019 |
CN |
201910028398.2 |
Aug 23, 2019 |
CN |
201910785412.3 |
Claims
1. A resource configuration information transmission method,
comprising: generating, by a first node, second indication
information, wherein the second indication information is used to
indicate a resource multiplexing type that can be supported by a
second functional unit and each of one or more subunits of a first
functional unit; and sending, by the first node, the second
indication information to a second node.
2. The method according to claim 1, wherein the second indication
information is used to indicate a resource multiplexing type that
can be supported by each of the one or more subunits of the first
functional unit and each of one or more subunits of the second
functional unit.
3. The method according to claim 2, wherein the first functional
unit comprises a first subunit and a second subunit, and the second
functional unit comprises a third subunit and a fourth subunit; and
the second indication information is used to indicate a resource
multiplexing type that can be supported by the first subunit and
the third subunit; and/or the second indication information is used
to indicate a resource multiplexing type that can be supported by
the first subunit and the fourth subunit; and/or the second
indication information is used to indicate a resource multiplexing
type that can be supported by the second subunit and the third
subunit; and/or the second indication information is used to
indicate a resource multiplexing type that can be supported by the
second subunit and the fourth subunit.
4. The method according to claim 1, wherein the first functional
unit is a distributed unit (DU), and the second functional unit is
a mobile terminal (MT).
5. The method according to claim 1, wherein the resource
multiplexing type comprises time division multiplexing (TDM), space
division multiplexing (SDM), or full-duplex multiplexing.
6. The method according to claim 5, wherein the resource
multiplexing type is SDM, indicating that the first functional unit
and the second functional unit is simultaneously perform receiving
or simultaneously perform sending; or the resource multiplexing
type is full duplex multiplexing, indicating that the first
functional unit and the second functional unit is simultaneously
perform transmission, wherein the simultaneous transmission is not
limited to simultaneous receiving or simultaneous sending.
7. The method according to claim 2, wherein the subunit of the
first functional unit is a cell, a cell group, a carrier, a carrier
group, or an antenna panel; and the subunit of the second
functional unit is a cell, a cell group, a carrier, a carrier
group, or an antenna panel.
8. The method according to claim 1, wherein the method further
comprises: receiving, by the first node, resource configuration
information from the second node, wherein the resource
configuration information is used to indicate resource types of the
one or more subunits of the first functional unit in the first
node.
9. The method according to claim 8, wherein the resource type is a
hard resource or a soft resource.
10. The method according to claim 8, wherein the resource type
further comprises a transmission direction, and the transmission
direction comprises downlink, uplink, and flexible.
11. The method according to claim 1, wherein the method further
comprises: obtaining, by the first node, a first resource, wherein
the first resource is a first-type resource or a second-type
resource; and considering, by the first node, the first resource as
the first-type resource, and transmitting a to-be-transmitted
signal on the first resource.
12. The method according to claim 11, wherein the first-type
resource is the hard resource, and the second-type resource is the
soft resource or an unavailable resource.
13. The method according to claim 12, wherein if the first resource
is the second-type resource, considering, by the first node, the
first resource as the first-type resource, and transmitting the
to-be-transmitted signal on the first resource.
14. The method according to claim 1, wherein the to-be-transmitted
signal comprises one or more of the following signals: a
synchronization signal block (SSB) and a random access channel
(RACH) signal.
15. A communications apparatus, comprising: at least one processor;
and one or more memories coupled to the at least one processor and
the at least one processor invokes the program stored in the
memory, and is configured to execute the program to cause the
communications apparatus to: generate second indication
information, wherein the second indication information is used to
indicate a resource multiplexing type that can be supported by a
second functional unit and each of one or more subunits of a first
functional unit, and send the second indication information to a
second node.
16. The apparatus according to claim 15, wherein the at least one
processor invokes the program stored in the memory, and is
configured to execute the program to cause the communications
apparatus to: indicate a resource multiplexing type that can be
supported by each of the one or more subunits of the first
functional unit and each of one or more subunits of the second
functional unit.
17. The apparatus according to claim 16, wherein the first
functional unit comprises a first subunit and a second subunit, and
the second functional unit comprises a third subunit and a fourth
subunit; and the second indication information is used to indicate
a resource multiplexing type that can be supported by the first
subunit and the third subunit; and/or the second indication
information is used to indicate a resource multiplexing type that
can be supported by the first subunit and the fourth subunit;
and/or the second indication information is used to indicate a
resource multiplexing type that can be supported by the second
subunit and the third subunit; and/or the second indication
information is used to indicate a resource multiplexing type that
can be supported by the second subunit and the fourth subunit.
18. The apparatus according to claim 15, wherein the first
functional unit is a distributed unit DU, and the second functional
unit is a mobile terminal MT.
19. The apparatus according to claim 15, wherein the resource
multiplexing type is SDM, indicating that the first functional unit
and the second functional unit can simultaneously perform receiving
or simultaneously perform sending; or the resource multiplexing
type is full duplex, indicating that the first functional unit and
the second functional unit can simultaneously perform transmission,
wherein the simultaneous transmission is not limited to
simultaneous receiving or simultaneous sending.
20. The apparatus according to claim 15, wherein the at least one
processor invokes the program stored in the memory, and is
configured to execute the program to cause the computing device to:
receive resource configuration information from the second node,
wherein the resource configuration information is used to indicate
resource types of the one or more subunits of the first functional
unit in the first node.
21. The apparatus according to claim 15, wherein the at least one
processor invokes the program stored in the memory, and is
configured to execute the program to cause the computing device to:
obtain a first resource, wherein the first resource is a first-type
resource or a second-type resource; and consider the first resource
as the first-type resource, and transmit a to-be-transmitted signal
on the first resource.
22. The apparatus according to claim 15, wherein the first-type
resource is the hard resource, and the second-type resource is the
soft resource or an unavailable resource.
23. A transmission method, comprising: obtaining a first resource,
wherein the first resource is a first-type resource or a
second-type resource; and considering the first resource as the
first-type resource, and transmitting a to-be-transmitted signal on
the first resource.
24. The method according to claim 23, wherein the first-type
resource is a hard resource, and the second-type resource is a soft
resource or an unavailable resource.
25. The method according to claim 23, wherein if the first resource
is the second-type resource, considering the first resource as the
first-type resource, and transmitting the to-be-transmitted signal
on the first resource.
26. The method according to claim 23, wherein the to-be-transmitted
signal comprises one or more of the following signals; a
synchronization signal block (SSB) and a random access channel
(RACH) signal.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of International
Application No. PCT/CN2020/071735, filed on Jan. 13, 2020, which
claims priority to Chinese Patent Application No. 201910785412.3,
filed on Aug. 23, 2019, Chinese Patent Application No.
201910028398.2, filed on Jan. 11, 2019. All of the aforementioned
patent applications are hereby incorporated by reference in their
entireties.
TECHNICAL FIELD
[0002] This application relates to the communications field, and
more specifically, to a resource configuration method and
apparatus.
BACKGROUND
[0003] As mobile communications technologies continuously develop,
spectrum resources become increasingly insufficient. To improve
spectrum utilization, base stations will be deployed more densely
in the future. In addition, dense deployment can avoid coverage
holes. In a conventional cellular network architecture, a base
station is connected to a core network by using an optical fiber.
However, fiber deployment is costly in many scenarios. A wireless
relay node (relay node, RN) is connected to a core network by using
a wireless backhaul link, so that optical fiber deployment costs
can be partially reduced.
[0004] Usually, the relay node establishes a wireless backhaul link
to one or more parent nodes, and accesses the core network through
the parent node. The parent node may perform control (for example,
data scheduling, timing modulation, and power control) on the relay
node by using a plurality of types of signaling. In addition, the
relay node may provide a service for a plurality of child nodes.
The parent node of the relay node may be a base station or another
relay node. The child node of the relay node may be a terminal or
another relay node. In consideration of a high bandwidth of a
future wireless network, an integrated access and backhaul
(integrated access and backhaul. IAB) solution is considered to be
introduced to 5G new radio (new radio, NR), to further reduce
deployment costs and improve deployment flexibility. Therefore, an
integrated access and backhaul relay, that is, an IAB node, is
introduced.
[0005] The IAB node may include two parts of functional units: a
mobile terminal (mobile terminal, MT) and a distributed unit
(Distributed unit, DU). The MT is used by the IAB node to
communicate with a parent node, and the DU is used by the IAB node
to communicate with a child node. In a scenario with a plurality of
antenna panels (panel) or cells, there is no solution for
configuring MT resources and DU resources in an IAB node.
SUMMARY
[0006] In view of this, this application provides a resource
configuration method and apparatus. A multiplexing type between a
second functional unit and each of one or more antenna panels of a
first functional unit is indicated to an IAB node, so that the IAB
node obtains a resource configuration of an MT or a resource
configuration of a DU based on the multiplexing type. This helps
implement a resource configuration in the IAB node in a case of a
plurality of antenna panels.
[0007] According to a first aspect, a resource configuration method
is provided, including: A first node receives first indication
information sent by a second node. The first indication information
is used to indicate a resource multiplexing type between a second
functional unit and each of one or more antenna panels of a first
functional unit. The first node transmits data on resources of one
or more antenna panels of the second functional unit. Resource
types of the one or more antenna panels of the second functional
unit are determined based on the resource multiplexing type.
Therefore, after obtaining the resource multiplexing type, the
first node can determine resources of the one or more antenna
panels of the second functional unit with reference to a resource
configuration of the first functional unit, thereby implementing a
resource configuration in an IAB node in a case of a plurality of
antenna panels.
[0008] In a possible implementation, the method further includes:
The first node receives resource configuration information from the
second node. The resource configuration information is used to
indicate resources of the one or more antenna panels of the first
functional unit in the first node. The resources of the one or more
antenna panels of the second functional unit are determined based
on the resource multiplexing type, the resources of the one or more
antenna panels of the first functional unit, and a preset
relationship. The preset relationship includes correspondences
between resource configurations of the first functional unit and
resource configurations of the second functional unit in the first
node in cases of different resource multiplexing types. Therefore,
the first node may further obtain the resource configuration of the
first functional unit from the second node, and then search the
preset relationship for the resource configuration of the second
functional unit by using the resource configuration of the first
functional unit.
[0009] In a possible implementation, the method further includes:
The first node sends second indication information to the second
node. The second indication information is used to indicate a
resource multiplexing type supported between the second functional
unit and each antenna panel of the first functional unit.
Alternatively, the second indication information is used to
indicate a resource multiplexing type supported between the second
functional unit and a first antenna panel of the first functional
unit, and the first antenna panel represents an antenna panel whose
direction is the same as a direction of an antenna panel used by
the second functional unit. Alternatively, the second indication
information is used to indicate a resource multiplexing type
supported between the second functional unit and a second antenna
panel of the first functional unit, and the second antenna panel
represents an antenna panel whose direction is different from a
direction of an antenna panel used by the second functional unit.
Therefore, the first node may report the supported resource
multiplexing type to the second node, so that the second node can
configure a resource multiplexing type for the first node with
reference to the resource multiplexing type reported by the first
node.
[0010] Optionally, the first functional unit is a mobile terminal
MT, and the second functional unit is a distributed unit DU.
Alternatively, the first functional unit is a distributed unit DU,
and the second functional unit is a mobile terminal MT.
[0011] In a possible implementation, when a resource configuration
of the DU is determined, the method further includes. If there is a
to-be-transmitted signal in the DU or the MT of the first node, the
first node adjusts a resource in the resource configuration of the
DU. A resource corresponding to the to-be-transmitted signal is a
first-type resource. Therefore, for some special to-be-transmitted
signals, to ensure successful transmission of these
to-be-transmitted signals, the first node may adjust a resource in
the resource configuration of the DU. "Adjustment" may be
interpreted as adjusting a soft resource or an unavailable resource
to a hard resource, or adjusting a hard resource to a soft resource
or an unavailable resource.
[0012] Optionally, the to-be-transmitted signal includes one or
more of the following signals: a synchronization signal block SSB
and a random access channel RACH signal.
[0013] Optionally, if there is a to-be-transmitted signal in the DU
of the first node, that the first node adjusts the resource
configuration of the DU includes: If the first node determines that
a first resource in the resource configuration of the DU is a
second-type resource, the first node adjusts the first resource to
a first-type resource. The first resource is a resource used by the
DU of the first node to transmit the to-be-transmitted signal. To
ensure successful transmission of the to-be-transmitted signal in
the DU, it needs to be ensured that the resource that is used to
transmit the to-be-transmitted signal and that is in the resource
configuration of the DU is the hard resource. Therefore, if the
first resource in the resource configuration of the DU is the soft
resource or the unavailable resource, the first resource is
converted into the hard resource.
[0014] Optionally, if there is a to-be-transmitted signal in the MT
of the first node, that the first node adjusts the resource
configuration of the DU includes: If the first node determines that
a second resource in the resource configuration of the DU is a
first-type resource, the first node adjusts the second resource to
a second-type resource. The second resource is a resource that
overlaps, in time domain, a resource used to transmit the
to-be-transmitted signal in the MT of the first node. To ensure
successful transmission of the to-be-transmitted signal in the MT,
it needs to be ensured that the resource that is used to transmit
the to-be-transmitted signal and that is in the resource
configuration of the MT is the hard resource. Therefore, the second
resource may be converted into the soft resource or the unavailable
resource, to ensure successful transmission of the
to-be-transmitted signal in the MT.
[0015] According to a second aspect, a resource configuration
method is provided, including: A second node determines first
indication information. The first indication information is used to
indicate a resource multiplexing type between a second functional
unit and each of one or more antenna panels of a first functional
unit. The resource multiplexing type is used by a first node to
determine resources of one or more antenna panels of the second
functional unit. The second node sends the first indication
information to the first node. Therefore, the second node sends the
resource multiplexing type between the second functional unit and
each of the one or more antenna panels of the first functional unit
to the first node, so that the first node determines the resources
of the one or more antenna panels of the second functional unit
based on the resource multiplexing type and with reference to a
resource configuration of the first functional unit, thereby
implementing a resource configuration in an IAB node in a case of a
plurality of antenna panels.
[0016] In a possible implementation, the method further includes:
The second node sends resource configuration information to the
first node. The resource configuration information is used to
indicate resources of the one or more antenna panels of the first
functional unit in the first node. Therefore, the second node sends
the resource configuration of the first functional unit to the
first node, so that the first node searches the preset relationship
for the resource configuration of the second functional unit by
using the resource configuration of the first functional unit.
[0017] In a possible implementation, the method further includes:
The second node receives second indication information sent by the
first node. The second indication information is used to indicate a
resource multiplexing type supported between the second functional
unit and each antenna panel of the first functional unit.
Alternatively, the second indication information is used to
indicate a resource multiplexing type supported between the second
functional unit and a first antenna panel of the first functional
unit, and the first antenna panel represents an antenna panel whose
direction is the same as a direction of an antenna panel used by
the second functional unit. Alternatively, the second indication
information is used to indicate a resource multiplexing type
supported between the second functional unit and a second antenna
panel of the first functional unit, and the second antenna panel
represents an antenna panel whose direction is different from a
direction of an antenna panel used by the second functional unit.
That a second node determines first indication information
includes: The second node determines the first indication
information based on the second indication information. Therefore,
the second node receives the resource multiplexing type that is
supported by the first node and that is reported by the first node,
so that the second node can configure a resource multiplexing type
for the first node with reference to the resource multiplexing type
reported by the first node.
[0018] Optionally, the first functional unit is a mobile terminal
MT, and the second functional unit is a distributed unit DU.
Alternatively, the first functional unit is a distributed unit DU,
and the second functional unit is a mobile terminal MT.
[0019] According to a third aspect, a communications apparatus is
provided. The communications apparatus includes modules configured
to perform the method according to any one of the first aspect or
the possible implementations of the first aspect.
[0020] According to a fourth aspect, a communications apparatus is
provided. The communications apparatus includes modules configured
to perform the method in any one of the second aspect or the
possible implementations of the second aspect.
[0021] According to a fifth aspect, a communications apparatus is
provided. The communications apparatus may be the first node (for
example, an IAB node or a terminal device) in the foregoing method
designs, or may be a chip disposed in the first node. The
communications apparatus includes a processor. The processor is
coupled to a memory, and may be configured to execute an
instruction in the memory, to implement the method performed by the
first node in any one of the first aspect or the possible
implementations of the first aspect. Optionally, the communications
apparatus further includes the memory. Optionally, the
communications apparatus further includes a communications
interface. The processor is coupled to the communications
interface.
[0022] When the communications apparatus is the first node, the
communications interface may be a transceiver or an input/output
interface.
[0023] When the communications apparatus is the chip disposed in
the first node, the communications interface may be an input/output
interface.
[0024] Optionally, the transceiver may be a transceiver circuit.
Optionally, the input/output interface may be an input/output
circuit.
[0025] According to a sixth aspect, a communications apparatus is
provided. The communications apparatus may be the second node (for
example, a donor base station) in the foregoing method designs, or
may be a chip disposed in the second node. The communications
apparatus includes a processor. The processor is coupled to a
memory, and may be configured to execute an instruction in the
memory, to implement the method performed by the second node in any
one of the second aspect or the possible implementations of the
second aspect. Optionally, the communications apparatus further
includes the memory. Optionally, the communications apparatus
further includes a communications interface. The processor is
coupled to the communications interface.
[0026] When the communications apparatus is the second node, the
communications interface may be a transceiver or an input/output
interface.
[0027] When the communications apparatus is the chip disposed in
the second node, the communications interface may be an
input/output interface.
[0028] Optionally, the transceiver may be a transceiver circuit.
Optionally, the input/output interface may be an input/output
circuit.
[0029] According to a seventh aspect, a program is provided. When
being executed by a processor, the program is configured to perform
any method in the first aspect or the second aspect or the possible
implementations of the first aspect or the second aspect.
[0030] According to an eighth aspect, a program product is
provided. The program product includes program code. When the
program code is run by a communications unit, a processing unit, a
transceiver, or a processor of a communications apparatus (for
example, a first node), the communications device is enabled to
perform any method in the first aspect or the possible
implementations of the first aspect.
[0031] According to a ninth aspect, a program product is provided.
The program product includes program code. When the program code is
run by a communications unit, a processing unit, a transceiver, or
a processor of a communications apparatus (for example, a second
node), the communications device is enabled to perform the method
in any one of the second aspect or the possible implementations of
the second aspect.
[0032] According to a tenth aspect, a computer-readable storage
medium is provided. The computer-readable storage medium stores a
program. The program enables a communications apparatus (for
example, a first node) to perform the method in any one of the
first aspect or the possible implementations of the first
aspect.
[0033] According to an eleventh aspect, a computer-readable storage
medium is provided. The computer-readable storage medium stores a
program. The program enables a communications apparatus (for
example, a second node) to perform any method in the second aspect
or the possible implementations of the second aspect.
BRIEF DESCRIPTION OF DRAWINGS
[0034] FIG. 1 is a schematic structural diagram of a communications
system to which the embodiments of this application are
applicable;
[0035] FIG. 2 is a schematic diagram of an example of a scenario
with a plurality of antenna panels:
[0036] FIG. 3 is a schematic interaction diagram of a resource
configuration method according to an embodiment of this
application:
[0037] FIG. 4 is a schematic diagram of correspondences between
resource configurations of one antenna panel of a DU and resource
configurations of an MT in cases of different resource multiplexing
types;
[0038] FIG. 5 is a schematic diagram of multiplexing types between
one antenna panel of an MT and two antenna panels of a DU;
[0039] FIG. 6 is a schematic diagram of resource configurations of
one antenna panel of an MT and two antenna panels of a DU;
[0040] FIG. 7 is a schematic diagram of an example of a plurality
of antenna panels of a DU and a plurality of antenna panels of an
MT;
[0041] FIG. 8A and FIG. 8B are a schematic diagram of an example of
adjusting a resource configuration according to an embodiment of
this application;
[0042] FIG. 9 is a schematic block diagram of a resource
configuration apparatus according to an embodiment of this
application;
[0043] FIG. 10 is a schematic structural diagram of a resource
configuration apparatus according to an embodiment of this
application:
[0044] FIG. 11 is a schematic block diagram of a resource
configuration apparatus according to another embodiment of this
application; and
[0045] FIG. 12 is a schematic structural diagram of a resource
configuration apparatus according to another embodiment of this
application.
DESCRIPTION OF EMBODIMENTS
[0046] The following describes technical solutions of this
application with reference to the accompanying drawings.
[0047] In the descriptions of the embodiments of this application,
unless otherwise stated, "a plurality" or "a plurality of" means
two or more than two. In addition, "at least one" may be replaced
with "one or more".
[0048] It should be understood that names of all nodes and messages
in this application are merely names set for ease of description in
this application, and may be different names in an actual network.
It should not be understood that names of various nodes and
messages are limited in this application. On the contrary, any name
that has a same or similar function as that of a node or a message
used in this application is considered as a method or an equivalent
replacement in this application, and is within the protection scope
of this application. Details are not described below.
[0049] In consideration of a high bandwidth of a future wireless
network, an integrated access and backhaul (integrated access and
backhaul, IAB) solution is considered to be introduced into 5th
generation (5th generation, 5G) new radio (new radio, NR) to
further reduce deployment costs and improve deployment flexibility,
and an integrated access and backhaul relay is introduced
accordingly. In this application, a relay node that supports
integrated access and backhaul is referred to as an IAB node (IAB
node), so that the relay node is distinguished from a long term
evolution (long term evolution, LTE) relay. A system including the
IAB node is also referred to as a relay system.
[0050] To better understand a resource configuration method and
apparatus disclosed in the embodiments of this application, the
following first describes a network architecture used in the
embodiments of the present invention. FIG. 1 is a schematic
structural diagram of a communications system to which the
embodiments of this application are applicable.
[0051] It should be noted that the communications system mentioned
in the embodiments of this application includes but is not limited
to a narrowband internet of things (narrowband internet of things,
NB-IoT) system, a wireless local area network (wireless local area
network. WLAN) system, an LTE system, a next-generation 5G mobile
communications system such as NR or a communications system after
5G, and a device to device (device to device, D2D) communications
system.
[0052] In the communications system shown in FIG. 1, an integrated
access and backhaul IAB system is provided. One IAB system includes
at least one base station 100, one or more terminal devices
(terminal) 101 served by the base station 100, one or more relay
node IAB nodes, and one or more terminal devices 111 served by the
IAB node 110. Usually, the base station 100 is referred to as a
donor base station (donor next generation node B, DgNB), and the
IAB node 110 is connected to the base station 100 by using a
wireless backhaul link 113. In this application, the donor base
station is also referred to as a donor node, namely, a donor node.
The base station includes but is not limited to: an evolved NodeB
(evolved NodeB, eNB), a radio network controller (radio network
controller, RNC), a node B (node B, NB), a base station controller
(base station controller, BSC), a base transceiver station (base
transceiver station, BTS), a home base station (for example, a home
evolved NodeB, or a home node B, HNB), a baseband unit (baseband
Unit, BBU), an eLTE (evolved LTE, eLTE) base station, an NR base
station (next generation node B, gNB), and the like. The terminal
device includes but is not limited to: any one of user equipment
(user equipment, UE), a mobile station, an access terminal, a user
unit, a user station, a mobile station, a remote station, a remote
terminal, a mobile device, a terminal, a wireless communications
device, a user agent, and a station (station, ST) that is in a
wireless local area network (wireless local access network, WLAN),
a cellular telephone, a cordless telephone, a session initiation
protocol (SIP) telephone, a wireless local loop (wireless local
loop, WLL) station, a personal digital assistant (personal digital
assistant, PDA), a handheld device having a wireless communication
function, a computing device, another processing device connected
to a wireless modem, a vehicle-mounted device, a wearable device, a
mobile station in a future 5G network, a terminal device in a
future evolved public land mobile network (public land mobile
network, PLMN), or the like. The IAB node is a specific name of the
relay node, and does not constitute a limitation on solutions in
the embodiments of this application. The IAB node may be one of the
foregoing base stations or terminal devices that have a forwarding
function, or may be in an independent device form.
[0053] The integrated access and backhaul system may further
include a plurality of other IAB nodes, for example, an IAB node
120 and an IAB node 130. The IAB node 120 is connected to the IAB
node 110 by using a wireless backhaul link 123, to access a
network. The IAB node 130 is connected to the IAB node 110 by using
a wireless backhaul link 133, to access the network. The IAB node
120 serves one or more terminal devices 121. The IAB node 130
serves one or more terminal devices 131. In FIG. 1, both the IAB
node 110 and the IAB node 120 are connected to the network by using
a wireless backhaul link. In this application, the wireless
backhaul link is viewed from a perspective of a relay node. For
example, the wireless backhaul link 113 is a backhaul link of the
IAB node 110, and the wireless backhaul link 123 is a backhaul link
of the IAB node 120. As shown in FIG. 1, one IAB node such as the
IAB node 120 may be connected to another IAB node 110 by using a
wireless backhaul link such as the wireless backhaul link 123, to
access the network. In addition, the relay node may be connected to
the network by using a plurality of levels of wireless relay nodes.
It should be understood that, in this application, the IAB node is
used only for a purpose of description, and does not indicate that
the solutions of this application are used only in an NR scenario.
In this application, the IAB node may be any node or device that
has a relay function. It should be understood that use of the IAB
node and use of the relay node in this application have a same
meaning.
[0054] For ease of description, the following defines basic terms
or concepts used in the embodiments of this application.
[0055] Parent node: A node that provides a wireless backhaul link
resource, such as the IAB node 110, is referred to as a parent node
of the IAB node 120. It should be understood that the parent node
may be an IAB node, a donor base station (for example, a donor
node), a network device, or the like. This is not limited.
[0056] Child node: Anode that transmits data to a network or
receives data from a network on a backhaul link resource is
referred to as a child node, where for example, the IAB node 120 is
referred to as a child node of the relay node 110, and the terminal
device 131 may be referred to as a child node of the relay node
130; and the network is a network on a core network or another
access network such as the Internet or a dedicated network.
[0057] Access link: An access link is a wireless link used by anode
to communicate with a child node of the node, and includes an
uplink transmission link and a downlink transmission link. On the
access link, uplink transmission is also referred to as uplink
transmission on the access link, and downlink transmission is also
referred to as downlink transmission on the access link. The node
includes but is not limited to the foregoing IAB node.
[0058] Backhaul link: A backhaul link is a wireless link used by a
node to communicate with a parent node of the node, and includes an
uplink transmission link and a downlink transmission link. On the
backhaul link, uplink transmission is also referred to as uplink
transmission on the backhaul link, and downlink transmission is
also referred to as downlink transmission on the backhaul link. The
node includes but is not limited to the foregoing IAB node.
[0059] In another description, an IAB node may be divided into two
parts, that is, a mobile terminal (mobile terminal, MT) and a
distributed unit (distributed unit, DU). The MT is used by the IAB
node to communicate with a parent node, and the DU is used by the
IAB node to communicate with a child node. A link between the MT in
the IAB node and a parent node is referred to as a parent BH link
(parent BH link), and a link between the DU in the IAB node and a
child IAB node is referred to as a child BH link (child BH link).
However, a link between the DU in the IAB node and subordinate UE
is referred to as an access link (access link). However, in this
application, for ease of description, a link between the IAB node
and a parent node is referred to as a backhaul link, and a link
between the IAB node and a child IAB node and/or UE are
collectively referred to as an access link.
[0060] Usually, a child node may be considered as a terminal device
of a parent node. It should be understood that, in the integrated
access and backhaul system shown in FIG. 1, one IAB node is
connected to one parent node. However, in a future relay system, to
improve reliability of a wireless backhaul link, one IAB node such
as the IAB node 120 may have a plurality of parent nodes that
simultaneously serve the IAB node. For example, the IAB node 130 in
the figure may further be connected to the TAB node 120 by using a
backhaul link 134. In other words, both the IAB node 110 and the
IAB node 120 are parent nodes of the IAB node 130. Names of the IAB
nodes 110, 120, and 130 do not limit a scenario or a network in
which the IAB nodes 110, 120, and 130 are deployed, and may be any
other names such as relay and RN. In this application, the IAB node
is used only for ease of description.
[0061] In FIG. 1, the wireless links 102, 112, 122, 132, 113, 123,
133, and 134 may be bidirectional links, including uplink and
downlink transmission links. Particularly, the wireless backhaul
links 113, 123, 133, and 134 may be used by a parent node to
provide a service for a child node. For example, the parent node
100 provides a wireless backhaul service for the child node 110. It
should be understood that an uplink and a downlink of the backhaul
link may be separated, that is, transmission is not performed on
the uplink and the downlink by using a same node. The downlink
transmission refers to transmitting information or data by a parent
node such as the node 100 to a child node such as the node 110. The
uplink transmission refers to transmitting information or data by a
child node such as the node 110 to a parent node such as the node
100. The node is not limited to a network node or a terminal
device. For example, in a D2D scenario, a terminal device may serve
as a relay node to provide a service for another terminal device.
In some scenarios, the wireless backhaul link may alternatively be
an access link. For example, the backhaul link 123 may
alternatively be considered as an access link for the node 110, and
the backhaul link 113 is alternatively an access link for the node
100. It should be understood that the parent node may be a base
station, or may be a relay node, and the child node may be a relay
node, or may be a terminal device having a relay function. For
example, in a D2D scenario, the child node may alternatively be a
terminal device.
[0062] The relay node shown in FIG. 1, such as the relay node 110,
120, or 130, may exist in two forms. One form is that the relay
node exists as an independent access node, and may independently
manage a terminal device that accesses the relay node. In this
case, the relay node usually has an independent physical cell
identifier (physical cell identifier, PCI). A relay in this form
usually needs to have a complete protocol stack function, for
example, a radio resource control (radio resource control, RRC)
function. This type of relay is usually referred to as a layer 3
relay. However, a relay node in another form and a donor node such
as a donor eNB or a donor gNB, belong to a same cell, and a user is
managed by a donor base station such as the donor node. This type
of relay is usually referred to as a layer 2 relay. A layer 2 relay
usually exists as a DU of a base station DgNB in a centralized unit
and distributed unit (central unit and Distributed unit, CU-DU)
architecture of NR, and communicates with a CU through an F1
application protocol (F1 application protocol, F1-AP) interface or
by using a tunneling protocol. The tunneling protocol may be, for
example, the general packet radio service tunneling protocol
(general packet radio service tunneling protocol, GTP). Details are
not described again. The donor node is a node that may be used to
access a core network, or is an anchor base station in a radio
access network, and the anchor base station may be used to access
the network. The anchor base station is responsible for receiving
data from the core network and forwarding the data to the relay
node, or receiving data from the relay node and forwarding the data
to the core network. Usually, a donor node in a relay system is
referred to as an IAB donor, namely, a donor node. In this
application, the two nouns may be used alternately. It should be
understood that the IAB donor and the donor node should not be
understood as entities or network elements that have different
functions.
[0063] In the embodiments of this application, the relay node (for
example, the IAB node), the terminal device, or the network device
includes a hardware layer, an operating system layer running on the
hardware layer, and an application layer running on an operating
system layer. The hardware layer includes hardware such as a
central processing unit (central processing unit, CPU), a memory
management unit (memory management unit, MMU), and a memory (also
referred to as a main memory). The operating system may be any one
or more computer operating systems that implement service
processing by using a process (process), for example, a Linux
operating system, a Unix operating system, an Android operating
system, an iOS operating system, or a Windows operating system. The
application layer includes applications such as a browser, an
address book, word processing software, and instant communications
software. In addition, a specific structure of an execution body of
a method provided in the embodiments of this application is not
specifically limited in the embodiments of this application,
provided that a program that records code of the method provided in
the embodiments of this application can be run to perform
communication according to the method provided in the embodiments
of this application. For example, the execution body of the method
provided in the embodiments of this application may be the terminal
device or the network device, or a functional module that can
invoke and execute the program in the terminal device or the
network device.
[0064] In addition, aspects or features of this application may be
implemented as a method, an apparatus, or a product that uses
standard programming and/or engineering technologies. The term
"product" used in this application covers a computer program that
can be accessed from any computer readable component, carrier, or
medium. For example, a computer-readable medium may include but is
not limited to: a magnetic storage component (for example, a hard
disk, a floppy disk, or a magnetic tape), an optical disc (for
example, a compact disc (compact disc, CD) or a digital versatile
disc (digital versatile disc, DVD)), and a smart card and a flash
memory component (for example, an erasable programmable read-only
memory (erasable programmable read-only memory, EPROM), a card, a
stick, or a key drive). In addition, various storage media
described in this specification may indicate one or more devices
and/or other machine-readable media that are configured to store
information. The term "machine-readable media" may include but is
not limited to a radio channel, and various other media that can
store, contain, and/or carry an instruction and/or data.
[0065] For ease of understanding, some terms or concepts in the
embodiments of this application are explained herein.
[0066] MT resource: The MT resource is a resource used by an MT
function of the IAB node. The MT resource may be configured as an
uplink (uplink, U) resource, a downlink (downlink, D) resource, or
a flexible (flexible, F) resource.
[0067] In addition, MT resources may further be classified into the
following two types of resources:
[0068] An available resource is a resource that may be scheduled by
a parent node.
[0069] An unavailable (null, N) resource is a resource that is not
scheduled by a parent node. A person skilled in the art should
understand that in actual use, the unavailable resource may also be
denoted as "NULL". This imposes no limitation on the embodiments of
this application.
[0070] In the embodiments of this application, the available
resource and the unavailable resource of the MT may be explicitly
configured by the parent node by using higher layer signaling (for
example, RRC signaling), or may be implicitly derived by the IAB
node by using a DU resource type. A manner in which the available
resource and the unavailable resource of the MT are obtained is not
limited in the embodiments of this application.
[0071] DU resource: The DU resource is a resource used by a DU
function of the IAB node. The DU resource may be configured as an
uplink (uplink, U) resource, a downlink (downlink, D) resource, a
flexible (flexible, F) resource, or an unavailable (null, N)
resource. Further, uplink resources of a DU may be classified into
a soft (soft, S) resource and a hard (hard, H) resource. Downlink
resources of the DU may be classified into a soft resource and a
hard resource. Flexible resources of the DU may be classified into
a soft resource and a hard resource.
[0072] Soft resource: Whether a resource can be used by the DU
depends on an indication of a parent node.
[0073] Hard resource: The hard resource is a resource that can
always be used by the DU.
[0074] In this application, the soft resource and the hard resource
of the DU may be explicitly configured by the parent node by using
higher layer signaling (for example, RRC signaling) or an interface
message (for example, an F1-AP interface message or an enhanced
F1-AP interface message), or may be implicitly derived by the IAB
node by using a resource configuration of an MT. A manner in which
the soft resource and the hard resource of the DU are obtained is
not limited in this application.
[0075] There may be different resource multiplexing types between
MT resources and DU resources in an IAB node, for example, time
division multiplexing (time division multiplexing, TDM), static
space division multiplexing (space division multiplexing, SDM),
dynamic SDM, or full-duplex multiplexing. In cases of different
resource multiplexing types, there may be different correspondences
between a resource configuration of an MT resource and a resource
configuration of a DU resource. For example, if a resource
multiplexing type is TDM, the MT and the DU of the IAB node cannot
simultaneously perform transmission. If a resource multiplexing
type is SDM, the MT and the DU can simultaneously perform receiving
or sending. If a resource multiplexing type is full duplex, the MT
and the DU can simultaneously perform transmission, where the
simultaneous transmission is not limited to simultaneous receiving
or simultaneous sending.
[0076] FIG. 2 is a schematic diagram of an example of a scenario
with a plurality of antenna panels. As shown in FIG. 2, an IAB node
has a plurality of antenna panels (for example, three antenna
panels: an antenna panel 0, an antenna panel 1, and an antenna
panel 2). The IAB node may communicate with a parent node, a child
node, or access UE by using the plurality of antenna panels. It
should be understood that a quantity of the antenna panels of the
IAB node is not limited in this embodiment of this application. In
FIG. 2, the three antenna panels are used only as an example for
description.
[0077] FIG. 3 is a schematic interaction diagram of a resource
configuration method 200 according to an embodiment of this
application. As shown in FIG. 3, the method 200 includes the
following step.
[0078] S210. A second node sends first indication information to a
first node, where the first indication information is used to
indicate a resource multiplexing type between a second functional
unit and each of one or more antenna panels of a first functional
unit. Correspondingly, the first node receives the first indication
information.
[0079] The first node may be a relay node, for example, an IAB
node.
[0080] The second node may be a parent node of the first node. For
description of the parent node, refer to the foregoing description,
and details are not described herein again. Herein, when the second
node is an IAB node, signaling sent by the IAB node to the first
node may be generated and sent to the second node by a parent node
(for example, a donor node) of the second node. Signaling sent by
the first node to the second node may also be sent by the second
node to the parent node of the second node.
[0081] The resource multiplexing type between the second functional
unit and each of the one or more antenna panels of the first
functional unit is configured by the second node for the first
node. The resource multiplexing type may be time division
multiplexing TDM, static space division multiplexing SDM, dynamic
SDM, or full-duplex multiplexing.
[0082] Herein, the first functional unit may be a mobile terminal
MT. Correspondingly, the second functional unit is a distributed
unit DU. Alternatively, the first functional unit may be a
distributed unit DU, and the second functional unit is a mobile
terminal MT.
[0083] It should be understood that, for ease of description, the
antenna panel is used as an example for description in this
embodiment of this application. However, this constitutes no
limitation on the protection scope of this embodiment of this
application. The technical solution in this embodiment of this
application is not only applicable to different antenna panels, but
also applicable to different cells, and may also be applicable to
different subunits. That is, different antenna panels may be
replaced with different cells. Alternatively, different antenna
panels are replaced with different subunits. For example, a DU of
the IAB node has a plurality of subunits, or an MT of the IAB node
has a plurality of subunits. For the MT, the subunit may be
represented by a cell, a cell group, a carrier, a carrier group, or
a bandwidth part (Bandwidth part, BWP). For example, when the MT
uses carrier aggregation transmission, the MT has a plurality of
cells or a plurality of carriers, and the plurality of cells or
plurality of carriers are subunits of the MT. When the MT uses
multi-connection transmission, the MT has a plurality of cell
groups or carrier groups, and the plurality of cell groups or
carrier groups are subunits of the MT. For the DU, the subunit may
be represented by a cell, a cell group, a carrier, a carrier group,
or an antenna panel. For example, the DU may have a plurality of
panels facing different directions, and each antenna panel
corresponds to one cell. Therefore, the subunit may be represented
by an antenna panel or a cell. For another example, the DU may have
a plurality of carriers, and each carrier corresponds to one cell.
Therefore, the subunit may be represented by a carrier or a
cell.
[0084] That the first functional unit is the DU and the second
functional unit is the MT is used as an example. The second node
may indicate that antenna panels of the DU have different resource
configurations, and resource multiplexing types between the
resource configurations corresponding to the antenna panels and an
MT resource are different. Alternatively, the second node may
indicate that resources of cells of the DU have different resource
configurations, and resource multiplexing types between the
resource configurations corresponding to the cells and an MT
resource are different. Alternatively, the second node may indicate
that resources of subunits of the DU have different resource
configurations, and resource multiplexing types between the
subunits and an MT resource are different. Herein, a person skilled
in the art should understand that resource multiplexing of a DU
resource and the MT resource may be understood as resource
multiplexing performed when a signal is transmitted on a resource
corresponding to each antenna panel/each cell/each subunit.
[0085] Optionally, different antenna panels may correspond to
different cell identifiers (identifier, ID), or may correspond to a
same cell ID. This is not limited.
[0086] For example, in a possible implementation, when the IAB node
provides a service for a child node or UE, the DU may support
running of a plurality of cells, and the plurality of cells have
different cell IDs. Optionally, different cells use different
antenna panels, and the second node may configure resource
multiplexing types between the different cells of the DU and the MT
in the first node. In another possible implementation, an MT of the
IAB node establishes connections to a plurality of parent nodes,
that is, the MT may communicate with different cells.
[0087] It should be understood that, for configuring the resource
multiplexing type by the second node for the first node, refer to a
resource multiplexing type that is supported by the first node and
that is reported by the first node. Alternatively, the second node
may configure the resource multiplexing type by itself. This is not
limited.
[0088] If the first node does not report the resource multiplexing
type supported by the first node, or even if the first node reports
the resource multiplexing type supported by the first node, the
second node may configure resource multiplexing types between the
MT and all antenna panels of the DU to be TDM; or the second node
may configure, when the MT and the DU use a same antenna panel, a
resource multiplexing type between the MT and the DU to be TDM, and
may configure, when the MT and the DU use different antenna panels,
a resource multiplexing type between the MT and the DU to be
semi-static SDM or dynamic SDM.
[0089] "Same antenna panel" means that the MT and the DU use a same
antenna panel, or an antenna panel used by the MT and an antenna
panel used by the DU face a same transmission direction. "Different
antenna panels" means that the MT and the DU use different antenna
panels, or an antenna panel used by the MT and an antenna panel
used by the DU face different directions.
[0090] In this embodiment of this application, the "same antenna
panel" may be represented by using another concept or term, for
example, co-location, quasi-co-location, co-direction, strong
correlation, or mutual impact. This is centrally described herein,
and details are not described below. In another possible
implementation, before the second node explicitly configures a
resource multiplexing type for the first node, a default resource
multiplexing type is used between the MT and the DU in the first
node. The default resource multiplexing type includes the following
cases: Resource multiplexing types between the MT and all antenna
panels of the DU are TDM, or a resource multiplexing type between
the MT and the DU is TDM when the MT and the DU use a same antenna
panel, and a resource multiplexing type between the MT and the DU
is semi-static SDM or dynamic SDM when the MT and the DU use
different antenna panels.
[0091] For a case in which the first node reports the resource
multiplexing type supported by the first node to the second node,
optionally, the method 200 further includes the following
steps.
[0092] S220. The first node sends second indication information to
the second node, where the second indication information is used to
indicate a resource multiplexing type supported between the second
functional unit and each antenna panel of the first functional
unit, or the second indication information is used to indicate a
resource multiplexing type supported between the second functional
unit and a first antenna panel of the first functional unit, and
the first antenna panel represents an antenna panel whose direction
is the same as a direction of an antenna panel used by the second
functional unit, or the first antenna panel is a same antenna panel
used by the first functional unit and the second functional unit;
or the second indication information is used to indicate a resource
multiplexing type supported between the second functional unit and
a second antenna panel of the first functional unit, and the second
antenna panel represents an antenna panel whose direction is
different from a direction of an antenna panel used by the second
functional unit. In other words, the first node may report a
co-location relationship between an antenna panel used by the MT
and an antenna panel of the DU (where the co-location relationship
is used to indicate whether the antenna panel used by the MT is the
same as the antenna panel of the DU) to the second node.
[0093] That the first functional unit is the DU and the second
functional unit is the MT is used as an example. The first node may
report resource multiplexing types supported between antenna panels
of the DU and the MT in the first node to the second node by using
the second indication information, where the resource multiplexing
types are specifically resource multiplexing types that are between
the MT and different antenna panels of the DU and that are used
when the MT performs transmission by using one or more antenna
panels. Correspondingly, the second node may determine, based on
the resource multiplexing types that are supported between the
antenna panels of the DU and the MT and that are reported by the
first node, whether the MT and the DU use a same antenna panel.
[0094] Alternatively, for example, the first node may report a
resource multiplexing type supported between the first antenna
panel of the DU and the MT, or a resource multiplexing type
supported between the second antenna panel of the DU and the MT to
the second node by using the second indication information.
Further, the second indication information may further include an
identifier of the first antenna panel.
[0095] Optionally, the second indication information may further
indicate the identifier of the first antenna panel or an identifier
of the second antenna panel. It should be understood that an
identifier of an antenna panel may be a panel ID or a cell ID.
Alternatively, an antenna panel may be identified by using an
identifier of a reference signal or a reference signal resource
identifier, for example, an identifier of a synchronization signal
block (synchronization signal block. SSB), an identifier of a
channel state information-reference signal (channel state
information-reference signal, CSI-RS), an identifier of a CSI-RS
resource, an identifier of a sounding reference signal (sounding
reference signal, SRS) resource, or the like. This is not limited
herein.
[0096] Specifically, the first node and/or the second node may
distinguish between different antenna panels by using reference
signal identifiers. For example, for a downlink reference signal
set 0 and a downlink reference signal set 1, each downlink
reference signal set includes at least one downlink reference
signal. The MT uses an antenna panel 0 to receive or send the
downlink reference signal set 0, and uses an antenna panel 1 to
receive or send the downlink reference signal set 1. Therefore, the
first node should report a resource multiplexing type between the
MT and the DU or a co-location relationship between the MT and an
antenna panel of the DU, where the resource multiplexing type or
the co-location relationship is used when the MT receives or sends
the downlink reference signal set 0 and the downlink reference
signal set 1. For example, the IAB node may report that an antenna
panel used by an MT of the IAB node when the MT receives a downlink
reference signal set is co-located with an antenna panel of the DU.
It should be noted that, it is assumed herein that remaining
signals (for example, a physical uplink shared channel (physical
uplink shared channel, PUSCH) and a physical downlink shared
channel (physical downlink shared channel, PDSCH)) that are
received and sent by the MT and at least one downlink reference
signal set have a spatial quasi co-located (quasi co-located, QCL)
relationship, or use a same antenna panel.
[0097] For example, the second node may configure a resource
multiplexing type for the first node with reference to a resource
multiplexing type reported by the first node. For example:
[0098] When the resource multiplexing type reported by the first
node is full-duplex multiplexing (herein, if the first node
supports full-duplex multiplexing, the first node may be considered
by default as also supporting all remaining resource multiplexing
types), the second node may configure TDM, dynamic SDM, semi-static
SDM, or full duplex.
[0099] When the resource multiplexing type reported by the first
node is semi-static SDM, the second node may configure TDM, dynamic
SDM, or semi-static SDM.
[0100] When the resource multiplexing type reported by the first
node is dynamic SDM, the second node may configure TDM or dynamic
SDM.
[0101] When the resource multiplexing type reported by the first
node is TDM, the second node may configure TDM. In a possible
implementation, after receiving the resource multiplexing type
reported by the first node, the second node may configure a
resource multiplexing type for the first node in another manner
without referring to content reported by the first node. This is
not limited.
[0102] Optionally, the foregoing resource multiplexing types have
different capability requirements. "Capability" includes one or
more of the following content: receiving/sending isolation, antenna
isolation, an interference suppression capability, and the like.
Usually, the IAB node has the following capability requirements in
cases of different resource multiplexing types in the following
sequence: TDM<dynamic SDM<static SDM<full duplex. To be
specific, full duplex requires high receiving/sending isolation (or
relatively high antenna isolation, or a relatively high
interference suppression capability), and TDM requires relatively
low receiving/sending isolation (or relatively low antenna
isolation, or a relatively low interference suppression
capability). After the first node reports a supportable resource
multiplexing type to the second node, a resource multiplexing type
configured by the second node for the first node should have a same
or lower capability requirement. For example, after the first node
reports that a resource multiplexing type that can be supported
between the MT and one or more antenna panels of the DU in the
first node is static SDM, the resource multiplexing type configured
by the second node for the first node may be static SDM, dynamic
SDM, or TDM, but cannot be full duplex.
[0103] Optionally, the second node may configure a type of special
soft resource for the first node. When the first node performs
switching or re-accessing, the first node may use the special soft
resource to communicate with a parent node on a corresponding MT
resource, for example, to receive a PDSCH or a physical downlink
control channel (physical downlink control channel, PDCCH) used to
carry a random access response message (random access response,
RAR).
[0104] S230. The first node transmits data on resources of one or
more antenna panels of the second functional unit, where resource
types of the one or more antenna panels of the second functional
unit are determined based on the resource multiplexing type.
[0105] In this embodiment of this application, the second node
sends the resource multiplexing type to the first node by using the
first indication information. The resource multiplexing type refers
to a different resource multiplexing type between each of the
multiple antenna panels of the first functional unit and the second
functional unit. After obtaining the resource multiplexing type,
the first node may determine the resources of the one or more
antenna panels of the second functional unit with reference to a
resource configuration of the first functional unit, and finally
transmit data on the resources of the one or more antenna panels of
the second functional unit, thereby implementing a resource
configuration in an IAB node in a case of a plurality of antenna
panels or cells.
[0106] In an implementation, the DU of the first node may use all
antenna panels, and the MT may use one antenna panel. There may be
different resource multiplexing types between the MT and different
antenna panels of the DU. For example, when the antenna panel of
the MT is the same as an antenna panel of the DU, a resource
multiplexing type between the MT and the antenna panel of the DU
may be TDM or dynamic SDM. For another example, when an antenna
panel of the MT is different from an antenna panel of the DU, a
resource multiplexing type between the MT and the antenna panel of
the DU may be semi-static SDM or full duplex. The scenario
described in FIG. 3 is used as an example. For the antenna panel 0
and the antenna panel 1, the antenna panel 0 is shared by the MT
and the DU, and a resource multiplexing type between the MT and the
antenna panel 0 of the DU is time division multiplexing TDM.
However, the antenna panel 1 is used only by the DU. Therefore, a
resource multiplexing type between the MT and the antenna panel 1
of the DU may be TDM, or may be semi-static SDM.
[0107] It should be understood that the foregoing is merely
described by using an example in which the MT uses one antenna
panel, but constitutes no limitation on this embodiment of this
application. In other words, the MT may alternatively perform
receiving or sending by using different antenna panels. For
example, the MT supports receiving of data by using a plurality of
antenna panels, or the MT uses a plurality of antenna panels to
perform mobility measurement, beam training, or the like.
[0108] Optionally, the second node may further send resource
configuration information of the first functional unit to the first
node, so that the first node may determine a resource configuration
of the one or more antenna panels of the second functional unit
based on the resource configuration information of the first
functional unit. Before the first node determines the resource
configuration of the one or more antenna panels of the second
functional unit, the method 200 further includes the following
step.
[0109] S240. The second node sends the resource configuration
information to the first node, where the resource configuration
information is used to indicate resources of the one or more
antenna panels of the first functional unit in the first node.
Correspondingly, the first node receives the resource configuration
information.
[0110] The first node determines the resources of the one or more
antenna panels of the second functional unit based on the resource
multiplexing type indicated in the first indication information,
the resources of the one or more antenna panels of the first
functional unit, and a preset relationship.
[0111] Specifically, the second node may send the resource
configuration information to the first node by using semi-static
signaling (for example, RRC signaling) or an interface message (for
example, an F1-AP interface message or an enhanced F1-AP interface
message). The first node may learn, by using the resource
configuration information, of the resources of the one or more
antenna panels of the first functional unit in the first node.
Then, the first node determines the resources of the one or more
antenna panels of the second functional unit based on the resource
multiplexing type indicated in the first indication information,
the resources of the one or more antenna panels of the first
functional unit, and the preset relationship.
[0112] The preset relationship includes correspondences between
resource configurations of the first functional unit and resource
configurations of the second functional unit in the first node in
cases of different resource multiplexing types. Herein, in
different resource multiplexing types, there are different
correspondences between resource configurations of the DU and
resource configurations of the MT.
[0113] The embodiments described in this application may also be
applied to a case in which both the MT and the DU have a plurality
of subunits.
[0114] The plurality of subunits of the MT and the plurality of
subunits of the DU may have different multiplexing types, and the
multiplexing types are described in the foregoing embodiment. The
multiplexing type may be reported by the first node to the second
node, or may be configured by the second node for the first
node.
[0115] For example, in a possible implementation, the second node
configures a resource type for each subunit of the MT of the first
node. The MT resource type includes at least one of available and
unavailable. The first node and/or a parent node of the first node
derive/derives a resource type of each subunit of the DU based on a
multiplexing relationship between the MT subunit and the DU
subunit, where resource types of the DU include at least one of a
hard resource, a soft resource, and an unavailable resource.
[0116] In another possible implementation, the second node
configures a resource type as a hard resource or a soft resource
for each subunit of the DU of the first node, and the first node
and/or the parent node of the first node derive/derives
availability of each resource of each subunit of the MT based on
the multiplexing relationship between the MT subunit and the DU
subunit.
[0117] It should be understood that resource types configured by
the second node for the MT and DU subunits of the first node may
further include a transmission direction, where the transmission
direction includes downlink (downlink, represented by D), uplink
(uplink, represented by U), and flexible (flexible, represented by
F).
[0118] FIG. 4 is a schematic diagram of correspondences between
resource configurations of one antenna panel of a DU and resource
configurations of an MT in cases of different resource multiplexing
types. The following describes the preset relationship with
reference to a specific example in FIG. 4.
[0119] Case 1: A resource multiplexing type is TDM.
[0120] In this case, a correspondence between a resource
configuration of one antenna panel of the DU and a resource
configuration of the MT is reflected as follows: For a hard
resource of the DU, a corresponding resource of the MT is an
unavailable resource, to be specific, the MT does not communicate
with a parent node on the resource. Alternatively, for an
unavailable resource of the MT, a corresponding resource of the DU
is a hard resource. For 10 slots shown in FIG. 4, in TDM, resources
corresponding to the DU in a slot 1 (D-H), a slot 3 (D-H), a slot 4
(D-H), a slot 5 (F-H), a slot 6 (F-H), a slot 7 (U-H), and a slot 8
(U-H) are hard resources, and MT resources corresponding to the MT
in these slots are unavailable resources. For a slot 0 (where a
resource in the DU is an unavailable (NULL) resource), a slot 2
(where a resource in the DU is a downlink soft resource D-S), and a
slot 9 (where a resource in the DU is an uplink soft resource U-S),
MT resources corresponding to the MT in these slots are available
resources.
[0121] It should be understood that resource configurations of one
antenna panel of the DU and resource configurations of the MT in
TDM in FIG. 4 are merely some examples. The following provides all
possible combination manners of resource configurations of one
antenna panel of the DU and resource configurations of the MT in
the first node in the TDM scenario. For details, refer to Table
1.
TABLE-US-00001 TABLE 1 Resource configuration Resource
configuration of the MT of the DU DL UL F Downlink hard DU: Tx DU:
Tx DU: Tx resource (DL-H) MT: NULL MT: NULL MT: NULL Downlink soft
When a DU When a DU When a DU resource (DL-S) resource is IA,
resource is IA, resource is IA, DU: Tx DU: Tx DU: Tx MT: NULL MT:
NULL Mr: NULL When a DU When a DU When a DU resource is INA,
resource is INA, resource is INA, DU: NULL DU: NULL DU: NULL MT: Rx
MT: Tx MT: Tx/Rx Uplink hard DU: Rx DU: Rx DU: Rx resource MT: NULL
MT: NULL MT: NULL (UL-H) Uplink soft When a DU When a DU When a DU
resource resource is IA, resource is IA, resource is IA, (UL-S) DU:
Rx DU: Rx DU: Rx MT: NULL MT: NULL MT: NULL When a DU When a DU
When a DU resource is INA, resource is INA, resource is INA, DU:
NULL DU: NULL DU: NULL MT: Rx MT: Tx MT: Tx/Rx Flexible hardware
DU: Tx/Rx DU: Tx/Rx DU: Tx/Rx resource (F-H) MT: NULL MT: NULL MT:
NULL Flexible soft When a DU When a DU When a DU resource (F-S)
resource is IA, resource is IA, resource is IA, DU: Tx/Rx DU: Tx/Rx
DU: Tx/Rx MT: NULL MT: NULL MT: NULL When a DU When a DU When a DU
resource is INA, resource is INA, resource is INA, DU: NULL DU:
NULL DU: NULL MT: Rx MT: Tx MT: Tx/Rx Unavailable DU: NULL DU: NULL
DU: NULL resource MT: Rx MT: Tx NIT: Tx/Rx (NA)
[0122] In Table 1, "MT Tx" indicates that the MT should perform
transmission after being scheduled. "DU: Tx" indicates that the DU
may perform transmission. "MT: Rx" indicates that the MT has a
capability of receiving a signal (if there is any signal to be
received). "DU: Rx" indicates that the DU may schedule a child node
to perform uplink transmission. "MT: Tx/Rx" indicates that the MT
should perform transmission or reception after being scheduled, but
the transmission and reception do not simultaneously occur. "DU:
Tx/Rx" indicates that the DU may perform transmission or receive
transmission from a child node, but the transmission and reception
do not simultaneously occur. "IA" indicates that the DU resource is
explicitly or implicitly indicated as available. "INA" indicates
that the DU resource is explicitly or implicitly indicated as
unavailable. "MT: NULL" indicates that the MT does not perform
sending and it is not necessary for the MT to have a receiving
capability. "DU: NULL" indicates that the DU does not perform
sending and does not receive transmission from a child node.
[0123] Case 2: A Resource Multiplexing Type is Static SDM.
[0124] In this case, a correspondence between a resource
configuration of one antenna panel of the DU and a resource
configuration of the MT is reflected as follows: When the DU and
the MT have a same transmission direction, for a hard resource of
the DU, a corresponding resource of the MT is an unavailable
resource, in other words, the MT does not communicate with a parent
node on the resource. When the DU and the MT have opposite
transmission directions, for a hard resource of the DU, a
corresponding resource of the MT is an available resource.
Alternatively, when the DU and the MT have a same transmission
direction, for an unavailable resource of the MT, a corresponding
resource of the DU is a hard resource. When the DU and the MT have
opposite transmission directions, for an available resource of the
MT, a corresponding resource of the DU may be a hard resource. As
shown in FIG. 4, in static SDM, resources corresponding to the DU
in a slot 1 (D-H), a slot 3 (D-H), a slot 4 (D-H), a slot 5 (F-H),
a slot 6 (F-H), a slot 7 (U-H), and a slot 8 (U-H) are hard
resources, and MT resources corresponding to the MT in slots in a
transmission direction the same as that of the DU or in slots
corresponding to flexible resources (including the slot 1, the slot
3, the slot 5, the slot 6, and the slot 8, where in these slots,
resources corresponding to the DU are also flexible resources) are
unavailable resources. However, for a slot 0 (in which a resource
in the DU is an unavailable (NULL) resource), a slot 2 (in which a
resource in the DU is a downlink soft resource D-S), a slot 4 (in
which a resource in the DU is a downlink hard resource D-H), a slot
7 (in which a resource in the DU is an uplink soft resource U-S),
and a slot 9 (in which a resource in the DU is an uplink soft
resource U-S), MT resources corresponding to the MT in these slots
are available resources. MT resources corresponding to the MT in
slots (including the slot 4) having a transmission direction
opposite to that of the DU are available resources. It can be
learned that for the slot 4, resource configurations of the DU are
different and resource configurations of the MT are different in
cases of different resource multiplexing types.
[0125] It should be understood that the resource configurations of
one antenna panel of the DU and the resource configurations of the
MT in an SDM scenario in FIG. 4 are merely some examples. The
following provides all possible combination manners of resource
configurations of one antenna panel of a DU and resource
configurations of an MT in a first node in the SDM scenario, as
shown in Table 2.
TABLE-US-00002 TABLE 2 Resource configuration Resource
configuration of the MT of the DU DL UL F DL-H IDU: Tx DU: Tx DU:
Tx MT: NULL MT: Tx MT: Tx DL-S When a DU When a DU When a DU
resource is IA, resource is IA, resource is IA, DU: Tx DU: Tx DU:
Tx MT: NULL MT: Tx MT: Tx When a DU When a DU When a DU resource is
INA, resource is INA, resource is INA, DU: NULL DU: NULL DU: NULL
MT: Rx. MT: Tx MT: Tx/Rx UL-H DU: Rx DU: Rx DU: Rx MT: Rx MT: NULL
MT: Rx UL-S When a DU When a DU When a DU resource is IA, resource
is IA, resource is IA, DU: Rx DU: Rx DU: Rx Mr: Rx MT: NULL (only
when the MT is Rx and the DU knows that the MT is Rx in advance)
MT: Rx When a DU When a DU When a DU resource is MA, resource is
INA, resource is INA, DU: NULL DU: NULL DU: NULL MT: Rx MT: Tx MT:
Tx/Rx F-H DU: Tx/Rx DU: Tx/Rx DU: Tx/Rx MT: Rx. (only Mr: Tx (only
MT: Tx (only when the DU is when the DU is when the DU is Rx and a
DU in Tx and a Tx and the parent node parent node parent DU knows
that the knows that the knows that the DU is Rx in DU is Tx in DU
is Tx in advance) advance) advance), Rx (only when the DU is Rx and
the parent DU knows that the DU is Rx in advance) FS When a DU When
a DU When a DU resource is IA, resource is IA, resource is IA, DU:
Tx/Rx DU: Tx/Rx DU: Tx/Rx MT: Rx (only MT: Tx (only MT: Tx (only
When the DU is when the DU is when the DU is Rx and the parent Tx
and the parent Tx and the parent DU knows that DU knows that DU
knows that the DU is Rx in the DU is Tx in the DU is Tx advance)
advance) in advance), Rx (only when the DU is Rx and the parent DU
knows that the DU is Rx in advance) When a DU When a DU When a DU
resource is INA, resource is INA, resource is INA, DU: NULL DU:
NULL DU: NULL MT: Rx MT: Tx MT: Tx/Rx NA DU: NULL DU: NULL DU: NULL
MT: Rx MT: Tx MT: Tx/Rx
[0126] For explanations or concepts of terms in Table 2, refer to
the descriptions in Table 1. For brevity, details are not described
herein again.
[0127] For example, when a resource type of the DU is F, according
to Table 2, the parent node needs to know a specific transmission
direction of the DU in advance, to determine whether to perform
spatial multiplexing transmission. To achieve this objective, an
IAB node may report a transmission direction of the F resource in
the DU in advance, so that a DU of the parent node performs
scheduling.
[0128] Alternatively, in another possible implementation, when the
IAB node is not configured to report an actual direction of the F
resource of the DU, if the F resource of the DU is (explicitly or
implicitly) configured as a hard resource, spatial multiplexing
transmission is not performed, and if the F resource is a soft
resource, dynamic SDM is performed, that is, only dynamic SDM is
allowed for the F resource of the DU.
[0129] Case 3: A Resource Multiplexing Type is Full Duplex.
[0130] In this case, receiving and sending of the MT and the DU may
not affect each other, that is, a resource configuration of the MT
and a resource configuration of the DU do not affect each other. As
shown in FIG. 4, in a full-duplex case, a resource of the DU in
each slot may be a hard resource, and a resource of the MT in each
slot may be an available resource.
[0131] Case 4: A Resource Multiplexing Type is Dynamic SDM.
[0132] A difference between the dynamic SDM and static SDM lies in
that whether the DU and the MT perform SDM depends on scheduling or
an indication of a second node, that is, spatial multiplexing is
performed only between an available resource of the MT and a soft
resource of the DU. As shown in FIG. 4, in dynamic SDM, resources
corresponding to the DU in a slot 1 (D-H), a slot 3 (D-H), a slot 5
(F-H), a slot 6 (F-H), a slot 7 (U-H), and a slot 8 (U-H) are hard
resources, and MT resources corresponding to the MT in slots in a
transmission direction the same as that of the DU or in slots
corresponding to flexible resources (including the slot 1, the slot
3, the slot 5, the slot 6, and the slot 8, where in these slots,
resources corresponding to the DU are also flexible resources) are
unavailable resources. However, for a slot 0 (in which a resource
in the DU is an unavailable (NULL) resource), a slot 2 (in which a
resource in the DU is a downlink soft resource D-S), a slot 4 (in
which a resource in the DU is a downlink soft resource D-S), a slot
7 (in which a resource in the DU is an uplink soft resource U-S),
and a slot 9 (in which a resource in the DU is an uplink soft
resource U-S), MT resources corresponding to the MT in these slots
are available resources. A difference between a resource
configuration of the DU in dynamic SDM and a resource configuration
of the DU in static SDM lies in that, in dynamic SDM, a resource of
the DU in the slot 4 is a soft resource.
[0133] In a possible implementation, when the DU resource is F,
only dynamic SDM may be performed. To be specific, the IAB node
first determines a transmission direction of a corresponding MT
resource, and then schedules the DU resource. Transmission on the
DU resource determined by the IAB node may enable the DU and the MT
to simultaneously perform sending, or the DU and the MT to
simultaneously perform receiving. It should be understood that the
slots in FIG. 4 are merely used as an example for description
herein, but do not constitute a limitation on the embodiments of
this application. Actually, the slot may be replaced with another
time domain resource, for example, a frame, a subframe, a
mini-slot, or a symbol.
[0134] It should be further understood that the technical solutions
in the embodiments of this application may be not limited to the
foregoing four cases, and may also be applicable to another
resource multiplexing type, for example, FDM (including static FDM
and dynamic FDM, where a resource configuration in static FDM is
the same as that in static SDM, and a resource configuration in
dynamic FDM is the same as that in dynamic SDM). This is not
limited.
[0135] In the scenario with a plurality of antenna panels, there is
the foregoing preset relationship. After the first node receives
the resources of the one or more antenna panels of the first
functional unit, the resources of one or more antenna panels of the
second functional unit may be determined by using the preset
relationship corresponding to the resource multiplexing type (for
example, if the resource multiplexing type is TDM, Table 1 is
searched; or if the resource multiplexing type is SDM. Table 2 is
searched). Specifically, if the first functional unit is a DU, the
second functional unit is an MT, and the second node sends resource
configurations of some or all antenna panels of the DU to the first
node, the first node obtains a resource multiplexing type between
the MT and the antenna panel of the DU, and then performs searching
by using a preset relationship corresponding to the resource
multiplexing type, to determine a resource configuration of the MT.
Alternatively, if the first functional unit is an MT, the second
functional unit is a DU, and the second node sends resource
configurations of some or all antenna panels of the MT to the first
node, the first node obtains a resource multiplexing type between
the DU and the antenna panel of the MT, and then performs searching
by using a preset relationship corresponding to the resource
multiplexing type, to determine a resource configuration of the
DU.
[0136] For example, the first functional unit is a DU, and the
second functional unit is an MT. It is assumed that the DU can use
all antenna panels, and the MT can use only one of a plurality of
antenna panels. In this case, the first indication information can
be used to indicate a resource multiplexing type between the MT and
each of the plurality of antenna panels of the DU. There may be
different resource multiplexing types between the MT and different
antenna panels of the DU. The first node may determine a resource
configuration of the MT based on a resource multiplexing type
indicated in the first indication information and a resource
configuration of the DU. For example, the first indication
information indicates that a resource multiplexing type between the
MT and an antenna panel 0 of the DU is TDM, and the first node may
obtain a resource configuration of the MT by searching Table 1.
Alternatively, the first indication information indicates that a
resource multiplexing type between the MT and an antenna panel 1 of
the DU is SDM, and the first node may obtain a resource
configuration of the MT by searching Table 2. For example, when the
resource multiplexing type between the MT and the antenna panel 0
of the DU is TDM, if a slot in resources of the antenna panel 0 of
the DU is DL-H, it can be learned from Table 1 that an MT resource
is NULL.
[0137] For example, the first functional unit is an MT, and the
second functional unit is a DU. It is assumed that the DU may use
all antenna panels, and the MT may use only one of a plurality of
antenna panels. In this case, the first indication information may
be used to indicate a corresponding resource multiplexing type
between an antenna panel of the MT and each antenna panel of the
DU. The first node may determine a resource configuration of the DU
based on a resource multiplexing type indicated in the first
indication information and a resource configuration of the MT. For
example, the first indication information indicates that a resource
multiplexing type between the MT and an antenna panel 0 of the DU
is TDM, and the first node may obtain a resource configuration of
the DU by searching Table 1. Alternatively, the first indication
information indicates that a resource multiplexing type between the
MT and an antenna panel 1 of the DU is SDM, and the first node may
obtain a resource configuration of the DU by searching Table 2.
FIG. 5 is a schematic diagram of multiplexing types between one
antenna panel of an MT and two antenna panels of a DU. As shown in
FIG. 5, a resource multiplexing type between an antenna panel of
the MT and an antenna panel 0 of the DU is a multiplexing type 0,
and a resource multiplexing type between the antenna panel of the
MT and an antenna panel 1 of the DU is a multiplexing type 1. In
FIG. 5, a resource of the MT needs to be jointly determined based
on a result derived based on the resource multiplexing type 0 and a
result derived based on the resource multiplexing type 1. For
example, if the first node determines, based on the resource
multiplexing type 0 and a resource of the antenna panel 0 of the
DU, that a resource of the MT is an available resource, and
determines, based on the resource multiplexing type 1 and a
resource of the antenna panel 1 of the DU, that the resource of the
MT is an unavailable resource, the resource should finally be
determined as an available resource. If the first node determines,
based on the resource of the antenna panel 0 of the DU and the
resource multiplexing type 0, that a result is an unavailable
resource, and determines, based on the resource of the antenna
panel 1 of the DU and the resource multiplexing type 1, that a
result is an unavailable resource, the resource of the MT is an
unavailable resource.
[0138] FIG. 6 shows an example in the scenario in FIG. 5. As shown
in FIG. 6, a resource multiplexing type 0 between resources of an
MT and an antenna panel 0 of a DU is TDM. A resource multiplexing
type 1 between the resources of the MT and an antenna panel 1 of
the DU is SDM. In a slot 0, a slot 1, a slot 2, a slot 3, a slot 4,
and a slot 5, resources of the MT are respectively: D, D, D, U, U,
and U; resources of the antenna panel 0 of the DU are respectively:
D-S, D-H, U-S, U-S, U-H, and D-S; and resources of the antenna
panel 1 of the DU are respectively D-S, D-H, U-H, U-S, U-H, and
D-H.
[0139] The second node may configure resources for all different
antenna panels of the DU of the first node. For example, resource
types may include D-S, D-H, U-S, U-H. F-H, F-S, and NA. In
addition, the resources of the MT may be jointly derived by the
first node based on resource configurations of a plurality of
antenna panels of the DU. For a same resource, different antenna
panels of the DU may have different resource configurations. In
FIG. 6, for a same uplink resource (corresponding to the slot 2) of
the DU, the uplink resource is a soft resource on the antenna panel
0 and is a hard resource on the antenna panel 1; and a
corresponding resource of the MT is a downlink resource (where a
status is an available resource). An available resource of the MT
is jointly derived based on resource configurations of the antenna
panel 0 and the antenna panel 1 of the DU. In other words, an
available resource corresponding to the MT in the slot 2 is
obtained based on an intersection of an available resource of the
MT that is derived based on the antenna panel 0 of the DU and an
available resource of the MT that is derived based on the antenna
panel 1 of the DU.
[0140] Alternatively, the second node may configure resources for
some antenna panels of the DU of the first node. For example,
resource types may include D-S, D-H, U-S, U-H, F-H, F-S, and NA.
For example, the second node may configure, for the DU of the first
node, resources of an antenna panel the same as an antenna panel of
the MT, so that the first node can derive resources of the MT based
on a preset relationship and a resource multiplexing type. For
resources of another antenna panel, the first node may derive the
resources based on a resource multiplexing type and the resources
of the MT. Herein, a derivation manner of the first node may not be
limited, provided that derivation results meet preset relationships
in cases of different resource multiplexing types. In FIG. 6, if
the second node configures resources of the antenna panel 0 of the
DU, the first node may derive the resource configuration of the MT
based on a resource multiplexing type (TDM) and a preset
relationship. Further, resources of the antenna panel 1 of the DU
may be derived based on a resource (whether the resource is
available) of the MT, a resource multiplexing type (SDM), and a
preset relationship.
[0141] Alternatively, the second node may configure resources of
the MT for the first node. The first node may obtain, based on a
resource configuration of the MT and with reference to a resource
multiplexing type between the MT and a DU that uses an antenna
panel the same as an antenna panel of the MT, a resource
configuration of the DU of which the antenna panel is the same as
the antenna panel of the MT; or may obtain, based on a resource
configuration of the MT and with reference to a resource
multiplexing type between the MT and a DU that uses a different
antenna panel from an antenna panel of the MT, a resource
configuration of the DU that uses the different antenna panel from
the antenna panel of the MT.
[0142] Therefore, regardless of whether resources first configured
by the second node for the first node are MT resources or DU
resources, the first node may derive a corresponding resource
configuration based on a preset relationship and a resource
multiplexing type.
[0143] The foregoing describes an example in which the MT resources
are derived when the second node configures the DU resources for
the first node, or the DU resources are derived when the MT
resources are configured for the first node. In practice, the
second node may further configure resources for the first node in a
full configuration manner. To be specific, the second node
simultaneously configures MT resources (including an available
resource and an unavailable resource) and DU resources (including a
soft resource and a hard resource) for the first node. Herein, the
first node does not need to derive resources based on the foregoing
preset relationship. However, a resource configuration of any
antenna panel of the MT, and a resource configuration of any
antenna panel of the DU that are configured by the second node
should meet a resource configuration constraint (that is, the
foregoing preset relationship) in a case of a corresponding
resource multiplexing type.
[0144] The foregoing example (for example, FIG. 5 or FIG. 6)
describes an embodiment of a plurality of antenna panels of the DU
and one antenna panel of the MT in the first node. Optionally, the
MT may alternatively use a plurality of antenna panels. The
following describes an embodiment of a plurality of antenna panels
of a DU and a plurality of antenna panels of an MT. It should be
understood that for terms or concepts such as a resource
multiplexing type and a preset relationship in the following
embodiment, refer to the foregoing descriptions. Details are not
described below again.
[0145] If the second node first configures resources of each
antenna panel of the MT for the first node, the first node may
determine resources of each antenna panel of the DU based on the
resources of each antenna panel of the MT and a preset
relationship. An available resource set may be independently
configured for each antenna panel of the MT. Available resources of
different antenna panels of the MT may be orthogonal in time domain
or spatial domain, or may overlap in time domain or spatial domain.
This is not limited. Correspondingly, the first node may determine,
based on resource configurations of the different antenna panels of
the MT, that resource configuration results of a resource
configuration of one antenna panel of the DU may be different.
Optionally, the first node may determine a DU resource according to
the following principle: For one DU resource (for example, one slot
or one symbol), if results determined by the first node based on
resources of different antenna panels of the MT and resource
multiplexing types are each a hard resource, the DU resource is a
hard resource. If a result determined by the first node based on a
resource of one antenna panel of the MT and a resource multiplexing
type is a soft resource, that is, if a result of the DU resource is
derived as a soft resource for even only one of a plurality of
antenna panels of the MT, the DU resource is a soft resource. In
other words, the soft resource of the DU is a union set of soft
resources determined based on different antenna panels of the
MT.
[0146] Similarly, if the second node first configures resources of
each antenna panel of the DU for the first node, the first node may
determine resources of each antenna panel of the MT based on the
resources of each antenna panel of the DU and a preset
relationship. Certainly, whether a resource of each antenna panel
of the MT is an available resource may be determined based on
derivation results of a plurality of antenna panels of the DU.
[0147] Optionally, the first node may determine an MT resource
according to the following principle: For one MT resource, if
results determined by the first node based on resources of
different antenna panels of the DU and resource multiplexing types
are each an unavailable resource, the MT resource is an unavailable
resource. If a result determined by the first node based on a
resource of one antenna panel of the DU and a resource multiplexing
type is an available resource, that is, if a result of the MT
resource is derived as an available resource for even only one of a
plurality of antenna panels of the DU, the MT resource is an
available resource. In other words, the available resource of the
MT is a union set of available resources determined based on
different antenna panels of the DU.
[0148] Optionally, the first node may alternatively determine an MT
resource according to the following principle: For one MT resource,
if results determined by the first node based on resources of
different antenna panels of the DU and resource multiplexing types
are each an available resource, the MT resource is an available
resource. If a result determined by the first node based on a
resource of one antenna panel of the DU and a resource multiplexing
type is an unavailable resource, that is, if a result of the MT
resource is derived as an unavailable resource for even only one of
a plurality of antenna panels or cells of the DU, the MT resource
is an unavailable resource. In other words, an unavailable resource
of the MT is a union set of unavailable resources determined based
on different antenna panels of the DU.
[0149] FIG. 7 is a schematic diagram of an example of a plurality
of antenna panels of a DU and a plurality of antenna panels of an
MT. As shown in FIG. 7, a resource multiplexing type between an
antenna panel 0 of the MT and an antenna panel 0 of the DU is 00, a
resource multiplexing type between the antenna panel 0 of the MT
and an antenna panel 1 of the DU is 01, a resource multiplexing
type between an antenna panel 1 of the MT and the antenna panel 0
of the DU is 10, and a resource multiplexing type between the
antenna panel 1 of the MT and the antenna panel 1 of the DU is 11.
The resource multiplexing types in FIG. 7 are merely an example for
describing possible combination relationships between different
antenna panels. Certainly, for a specific resource multiplexing
type, for example, static SDM, dynamic SDM. TDM, or full duplex,
refer to the foregoing description. Details are not described
herein again. In FIG. 7, a resource of the antenna panel 0 of the
DU needs to be jointly determined based on a result derived based
on the resource multiplexing type 00 and a result derived based on
the resource multiplexing type 10. For example, if the first node
determines, based on the resource multiplexing type 00, that a
resource a of the antenna panel 0 of the DU is a soft resource, and
determines, based on the resource multiplexing type 10, that the
resource a of the antenna panel 0 of the DU is a hard resource, the
resource a should be finally determined as a soft resource
according to the foregoing principle of determining the DU
resource. A resource of the antenna panel 1 of the DU needs to be
jointly determined based on a result derived based on the resource
multiplexing type 01 and a result derived based on the resource
multiplexing type 11. For example, if the first node determines,
based on the resource multiplexing type 01, that a resource b of
the antenna panel 1 of the DU is a hard resource, and determines,
based on the resource multiplexing type 11, that the resource b of
the antenna panel 0 of the DU is a hard resource, the resource b
should be finally determined as a hard resource according to the
foregoing principle of determining the DU resource.
[0150] It should be understood that the example in FIG. 7 is merely
for ease of understanding by a person skilled in the art, and shall
not constitute a limitation on the protection scope of the
embodiments of this application.
[0151] The foregoing embodiment describes a method for deriving, by
the first node, a DU resource type based on an MT resource
configuration, and a method for deriving, by the first node, an MT
resource type based on a DU resource configuration. Optionally, the
derivation method is also applicable to a parent node or a donor
node of the first node. For example, the parent node or the donor
node derives a DU resource type based on the MT resource
configuration of the first node by using the foregoing derivation
method, or derives an MT resource type based on the DU resource
configuration of the first node.
[0152] In this embodiment of this application, to ensure successful
sending or receiving of a specific physical signal (for example, a
broadcast synchronization signal block or a reference signal), a
resource configuration of the DU or the MT may be adjusted.
Therefore, the resource configuration of an IAB is more flexible.
The following provides detailed descriptions. Certainly, the
adjustment is not limited to a scenario with a plurality of antenna
panels, that is, the adjustment is also applicable to a scenario
with a single antenna panel.
[0153] Optionally, the method 200 further includes:
[0154] if there is a to-be-transmitted signal in the DU or the MT
of the first node, adjusting, by the first node, a resource in the
resource configuration of the DU. The resource corresponding to the
to-be-transmitted signal is a first-type resource. The first-type
resource is a hard resource. A case in which the resource
configuration of the DU is determined is used as an example for
description.
[0155] The to-be-transmitted signal may be a synchronization signal
(synchronization signal, SS)/physical broadcast channel (physical
broadcast channel, PBCH) block (block) (or referred to as a
synchronization signal block SSB), or may be a random access
channel (random access channel, RACH). It should be understood that
the SSB may include an SSB set sent by the IAB node to access UE,
or may include an SSB set used for mutual discovery between IAB
nodes. This is not limited. Similarly, the RACH channel may include
a RACH sent by UE or a remaining IAB node to the IAB node.
[0156] Herein, an objective of adjusting the resource in the
resource configuration of the DU is to ensure that receiving and
sending of a to-be-transmitted signal are always feasible. To be
specific, if there is a to-be-transmitted signal in the MT, and a
corresponding resource in the DU is a hard resource in this case,
the corresponding resource (that is, the hard resource) in the DU
may be adjusted, to ensure successful sending or receiving of the
to-be-transmitted signal in the MT. If there is a to-be-transmitted
signal in the DU, and a corresponding resource in the DU is a soft
resource or an unavailable resource in this case, the corresponding
resource in the DU may be adjusted to a hard resource, to ensure
successful sending or receiving of the to-be-transmitted signal in
the DU.
[0157] It should be understood that a granularity of resource
adjustment is not specifically limited in this embodiment of this
application, and may be slot-level conversion, symbol-level
conversion, or the like. For example, the slot-level conversion
means that resources corresponding to an entire slot including a
signal are converted into hard resources. The symbol-level
conversion means that only a resource corresponding to a symbol
including a signal is converted into a hard resource.
[0158] Optionally, if there is a to-be-transmitted signal in the
DU, the adjusting, by the first node, the resource configuration of
the DU includes:
[0159] if the first node determines that a first resource in the
resource configuration of the DU is a second-type resource,
adjusting, by the first node, the first resource to a first-type
resource. The first resource is a resource used by the DU of the
first node to transmit the to-be-transmitted signal. The
second-type resource is a soft resource or an unavailable
resource.
[0160] "Adjustment" herein refers to converting a soft resource or
an unavailable resource into a hard resource. It should be
understood that the "adjustment" herein may be understood as that a
soft resource or an unavailable resource is previously configured,
but is directly used as a hard resource in actual communication. In
other words, regardless of whether the first resource is a soft
resource or an unavailable resource, the DU needs to transmit the
to-be-transmitted signal on the first resource. It should be
understood that for the "adjustment" herein, there may not be
separate configuration information to adjust a resource, but
instead, an "adjusted" resource may break through a rule
constrained by the foregoing preset relationship (for example, the
present relationship in Table 1 or Table 2) during actual use, and
a soft resource or an unavailable resource is used as a hard
resource.
[0161] In other words, if there is a to-be-transmitted signal in
the DU in the first node, but a first resource used to transmit the
to-be-transmitted signal is a soft resource or an unavailable
resource in time domain, to avoid affecting sending or receiving of
the to-be-transmitted signal in the DU, the first resource may be
converted into a hard resource.
[0162] Optionally, if there is a to-be-transmitted signal in the DU
in the first node, the adjusting, by the first node, the resource
configuration of the DU includes:
[0163] if the first node determines that a second resource in the
resource configuration of the DU is a first-type resource,
adjusting, by the first node, the second resource to a second-type
resource. The second resource is a resource that overlaps, in time
domain, a resource used to transmit the to-be-transmitted signal in
the MT of the first node. The second resource is a resource in the
DU. It should be understood that the overlapping herein is
overlapping in time domain, and does not necessarily occur in
frequency domain.
[0164] "Adjustment" herein refers to converting a hard resource
into a soft resource or an unavailable resource. It should be
understood that the "adjustment" herein may be understood as that a
hard resource is previously configured, but is directly used as a
soft resource or an unavailable resource in actual communication.
To be specific, regardless of whether a resource that overlaps the
second resource in time domain is a hard resource or a soft
resource (or an unavailable resource), the MT needs to transmit the
to-be-transmitted signal on the second resource. It should be
understood that for the "adjustment" herein, there may not be
separate configuration information to adjust a resource, but
instead, an "adjusted" resource location may break through a rule
constrained by the foregoing preset relationship (for example, the
present relationship in Table 1 or Table 2) during actual use, and
a hard resource is used as a soft resource or an unavailable
resource.
[0165] In other words, if there is a to-be-transmitted signal in
the MT in the first node, but in time domain, a second resource
that corresponds to a resource used to transmit the
to-be-transmitted signal and that is in the DU is a hard resource,
for the purpose of not affecting sending or receiving of the
to-be-transmitted signal in the MT, the second resource may be
converted into a soft resource or an unavailable resource, that is,
signal transmission of the DU on the second resource needs to be
stopped.
[0166] For ease of understanding, the following provides
description with reference to an example in FIG. 8A and FIG. 8B. As
shown in FIG. 8A and FIG. 8B, a diagram in an upper part of FIG. 8A
and FIG. 8B shows a resource configuration before adjustment and an
adjusted resource configuration in a DU. A lower part of FIG. 8A
and FIG. 8B shows a resource configuration before adjustment and an
adjusted resource configuration in an MT. R in FIG. 8A and FIG. 8B
represents a signal, for example, an SSB or a RACH. Adjusting the
resource configuration of the DU is used as an example for
description. It can be learned that a periodicity of the resource
configuration of the DU is 10 resource units (including five
resource units corresponding to hard resources and five resource
units corresponding to soft resources), and a periodicity of
transmission of a signal is 40 resource units. When the signal is
received or sent, a plurality of signal resources may overlap the
soft resources of the DU in time domain. If a signal that is
periodically sent or received in the DU needs to completely overlap
a hard resource in time domain through configuration, a
configuration periodicity of a resource configuration (including
soft resources and hard resources) of the DU needs to be equivalent
to a transmission periodicity of the signal. For example, it is
assumed that the signal is an SSB, and a periodicity of the SSB may
be 160 milliseconds (ms), where 640 slots (where a subcarrier
spacing is of 60 kHz) may be included therein. If the periodicity
of the resource configuration of the DU is increased, signaling
overheads are greatly increased.
[0167] To avoid an increase in the overheads, a resource in the DU
may be adjusted. FIG. 8A and FIG. 8B shows the adjusted resource
configuration of the DU. Soft resources in the DU that overlap a
plurality of signal resources in time domain are adjusted to hard
resources, to ensure successful sending of a periodic signal in the
DU, thereby avoiding increasing the signaling overheads. For
example, a resource used by the DU to send an SSB or a resource
used by the DU to receive a RACH may overlap (for example, overlap
in time domain) a soft resource of the DU, and the soft resource of
the DU may be adjusted to a hard resource. Alternatively, a
resource used by the MT to receive an SSB or a resource used by the
MT to send a RACH may overlap (for example, overlap in time domain)
an unavailable resource of the MT, and the unavailable resource of
the MT may be adjusted to an available resource.
[0168] The foregoing describes a manner of adjusting the resource
configuration of the DU in FIG. 8A and FIG. 8B. It should be
understood that, for the resource configuration of the MT, refer to
the foregoing manner, and an unavailable resource is adjusted to an
available resource. For brevity, how to adjust the resource
configuration of the MT is not described herein. It should be
further understood that an example in which a periodicity of the
resource configuration of the MT is the same as a periodicity of
the resource configuration of the DU is used for description in
FIG. 8A and FIG. 8B. However, whether the periodicity of the
resource configuration of the DU is the same as the periodicity of
the resource configuration of the MT is not limited in this
embodiment of this application, and the resource configuration of
the DU and the periodicity of the resource configuration of the MT
may be the same or may be different.
[0169] In other words, a resource (for example, a DU resource) used
to send an SSB should be essentially a hard resource.
Alternatively, a resource (DU resource) used to receive a RACH
should be essentially a hard resource. In another possible case, if
a resource that is in MT resources and that is used to receive an
SSB (or send a RACH) overlaps, in time domain, a resource that is
in DU resources and that is used to send an SSB (or receive a
RACH), receiving of the SSB (or sending of the RACH) on the MT
resource may be preferentially performed. That is, a resource that
is in corresponding resources of the DU and that is used to send an
SSB (or receive a RACH) is considered as a soft resource or an
unavailable resource.
[0170] The foregoing describes a case in which the resource
configuration of the DU needs to be adjusted. It should be
understood that, for another signal that is periodically sent or
received, for example, a reference signal such as a CSI-RS signal
that an IAB node requests a parent node to configure, the resource
configuration determined above may be used for corresponding
sending or receiving, and there is no need to adjust the resource
configuration of the DU.
[0171] It should be further understood that the foregoing describes
a case in which the resource configuration of the DU needs to be
adjusted. In a possible implementation, the resource configuration
of the MT may be alternatively adjusted. For example, if a signal
with a relatively high priority needs to be transmitted in the DU,
and the signal overlaps, in time domain, a resource (an available
resource) corresponding to a resource configuration of the MT, the
corresponding resource of the MT may be adjusted to an unavailable
resource, to ensure successful transmission of the signal in the
DU. For example, a resource used by the DU to send an SSB or
receive a RACH may overlap an available resource of the MT in time
domain. In this case, the available resource of the MT may be
adjusted to an unavailable resource, that is, a parent node does
not schedule, at a corresponding location, the MT of the IAB node
to transmit a signal such as a PDSCH or a PUSCH.
[0172] It should be understood that examples in FIG. 4 to FIG. 8A
and FIG. 8B are provided merely for helping a person skilled in the
art understand the embodiments of this application, but are not
intended to limit the embodiments of this application to specific
scenarios shown in the examples. A person skilled in the art can
make various equivalent modifications or changes according to the
examples shown in FIG. 4 to FIG. 8A and FIG. 8B, and such
modifications or changes also fall within the scope of the
embodiments of this application.
[0173] It should be further understood that the solutions in the
embodiments of this application may be appropriately combined for
use, and explanations or descriptions of terms in the embodiments
may be mutually referenced or explained in the embodiments. This is
not limited.
[0174] It should be further understood that sequence numbers of the
foregoing processes do not mean execution sequences in various
embodiments of this application. The execution sequences of the
processes should be determined based on functions and internal
logic of the processes, and should not be construed as any
limitation on the implementation processes of the embodiments of
this application.
[0175] The foregoing describes in detail the resource configuration
methods according to the embodiments of this application with
reference to FIG. 1 to FIG. 8A and FIG. 8B. The following describes
resource configuration apparatuses according to the embodiments of
this application with reference to FIG. 9 to FIG. 12. It should be
understood that the technical features described in the method
embodiments are also applicable to the following apparatus
embodiments.
[0176] FIG. 9 is a schematic block diagram of a resource
configuration apparatus 900 according to an embodiment of this
application. The apparatus 900 is configured to perform the method
performed by the first node in the foregoing method embodiments.
Optionally, a specific form of the apparatus 900 may be a relay
node or a chip in a relay node. This is not limited in this
embodiment of this application. The apparatus 900 includes:
[0177] a transceiver module 910, configured to receive first
indication information sent by a second node, where the first
indication information is used to indicate a resource multiplexing
type between a second functional unit and each of one or more
antenna panels of a first functional unit; and
[0178] the transceiver module 910 is further configured to transmit
data on resources of one or more antenna panels of the second
functional unit, where resource types of the one or more antenna
panels of the second functional unit are determined based on the
resource multiplexing type.
[0179] In an optional implementation, the transceiver module 910 is
further configured to receive resource configuration information
from the second node, where the resource configuration information
is used to indicate resources of the one or more antenna panels of
the first functional unit in the apparatus 900, where
[0180] the resources of the one or more antenna panels of the
second functional unit are determined based on the resource
multiplexing type, the resources of the one or more antenna panels
of the first functional unit, and a preset relationship, and the
preset relationship includes correspondences between resource
configurations of the first functional unit and resource
configurations of the second functional unit in the first node in
cases of different resource multiplexing types.
[0181] In an optional implementation, the transceiver module 910 is
further configured to send second indication information to the
second node, where the second indication information is used to
indicate a resource multiplexing type supported between the second
functional unit and each antenna panel of the first functional
unit; or the second indication information is used to indicate a
resource multiplexing type supported between the second functional
unit and a first antenna panel of the first functional unit, and
the first antenna panel represents an antenna panel whose direction
is the same as a direction of an antenna panel used by the second
functional unit: or the second indication information is used to
indicate a resource multiplexing type supported between the second
functional unit and a second antenna panel of the first functional
unit, and the second antenna panel represents an antenna panel
whose direction is different from a direction of an antenna panel
used by the second functional unit.
[0182] Optionally, the first functional unit is a mobile terminal
MT functional unit, and the second functional unit is a distributed
unit DU. Alternatively, the first functional unit is a distributed
unit DU, and the second functional unit is a mobile terminal MT
functional unit.
[0183] In an optional implementation, when a resource configuration
of the DU is determined, the apparatus further includes:
[0184] a processing module 920, configured to: if there is a
to-be-transmitted signal in the DU or the MT of the first node,
adjust a resource in the resource configuration of the DU, where a
resource corresponding to the to-be-transmitted signal is a
first-type resource.
[0185] In an optional implementation, if there is a
to-be-transmitted signal in the DU of the apparatus, that the
processing module 920 is configured to adjust the resource
configuration of the DU specifically includes:
[0186] if it is determined that a first resource in the resource
configuration of the DU is a second-type resource, adjusting the
first resource to a first-type resource, where the first resource
is a resource used by the DU of the first node to transmit the
to-be-transmitted signal.
[0187] In an optional implementation, if there is a
to-be-transmitted signal in the MT of the apparatus, that the
processing module 920 is configured to adjust the resource
configuration of the DU specifically includes:
[0188] if it is determined that a second resource in the resource
configuration of the DU is a first-type resource, adjusting the
second resource to a second-type resource, where the second
resource is a resource that overlaps, in time domain, a resource
used to transmit the to-be-transmitted signal in the MT of the
first node.
[0189] Optionally, the to-be-transmitted signal includes one or
more of the following signals: a synchronization signal block SSB
and a random access channel RACH signal.
[0190] It should be understood that the resource configuration
apparatus 900 according to this embodiment of this application may
correspond to the method of the first node in the foregoing method
embodiments, for example, the method in FIG. 3. In addition, the
foregoing and other management operations and/or functions of the
modules in the apparatus 900 are respectively used to implement
corresponding steps of the method of the first node in the
foregoing method embodiments. Therefore, beneficial effects in the
foregoing method embodiments may also be implemented. For brevity,
details are not described herein again.
[0191] It should be further understood that the modules in the
apparatus 900 may be implemented in a form of software and/or
hardware. This is not specifically limited. In other words, the
apparatus 900 is presented in a form of a functional module. The
"module" herein may be an application-specific integrated circuit
ASIC, a circuit, a processor and a memory that execute one or more
software or firmware programs, an integrated logic circuit, and/or
another component that can provide the foregoing functions.
Optionally, in a simple embodiment, a person skilled in the art may
figure out that the apparatus 900 may be in a form shown in FIG.
10. The processing module 920 may be implemented by using a
processor 1001 shown in FIG. 10. The transceiver module 910 may be
implemented by using a transceiver 1003 shown in FIG. 10.
Specifically, the processor is implemented by executing a computer
program stored in the memory. Optionally, when the apparatus 900 is
a chip, a function and/or an implementation process of the
transceiver module 910 may alternatively be implemented by a pin, a
circuit, or the like. Optionally, the memory is a storage unit in
the chip, for example, a register or a buffer. The storage unit may
alternatively be a storage unit that is in a computer device and
that is located outside the chip, for example, a memory 1002 shown
in FIG. 10.
[0192] FIG. 10 is a schematic structural diagram of a resource
configuration apparatus 1000 according to an embodiment of this
application. As shown in FIG. 10, the apparatus 1000 includes a
processor 1001.
[0193] In a possible implementation, the processor 1001 is
configured to invoke an interface to perform the following actions:
receiving first indication information sent by a second node, where
the first indication information is used to indicate a resource
multiplexing type between a second functional unit and each of one
or more antenna panels of a first functional unit, and transmitting
data on resources of one or more antenna panels of the second
functional unit, where resource types of the one or more antenna
panels of the second functional unit are determined based on the
resource multiplexing type.
[0194] It should be understood that the processor 1001 may invoke
the interface to perform the foregoing receiving and sending
actions. The invoked interface may be a logical interface or a
physical interface. This is not limited. Optionally, the physical
interface may be implemented by using a transceiver. Optionally,
the apparatus 1000 further includes a transceiver 1003.
[0195] Optionally, the apparatus 1000 further includes a memory
1002. The memory 1002 may store program code in the foregoing
method embodiments, so that the processor 1001 invokes the program
code.
[0196] Specifically, if the apparatus 1000 includes the processor
1001, the memory 1002, and the transceiver 1003, the processor
1001, the memory 1002, and the transceiver 1003 communicate with
each other by using an internal connection path, to transfer a
control signal and/or a data signal. In a possible design, the
processor 1001, the memory 1002, and the transceiver 1003 may be
implemented by using a chip, and the processor 1001, the memory
1002, and the transceiver 1003 may be implemented in a same chip,
or may be separately implemented in different chips, or functions
of any two of the processor 1001, the memory 1002, and the
transceiver 1003 are implemented in one chip. The memory 1002 may
store the program code, and the processor 1001 invokes the program
code stored in the memory 1002, to implement a corresponding
function of the apparatus 1000.
[0197] It should be understood that the apparatus 1000 may be
further configured to perform another step and/or operation on the
first node side in the foregoing embodiments. For brevity, details
are not described herein again.
[0198] FIG. 11 is a schematic block diagram of a resource
configuration apparatus 1100 according to an embodiment of this
application. The apparatus 1100 is configured to perform the method
performed by the second node in the foregoing method embodiments.
The second node is a parent node of the first node. Optionally, a
specific form of the apparatus 1100 may be a relay node or a chip
in a relay node, or may be a donor base station or a chip in a
donor base station. This is not limited in this embodiment of this
application. The apparatus 1100 includes:
[0199] a processing module 1110, configured to determine first
indication information, where the first indication information is
used to indicate a resource multiplexing type between a second
functional unit and each of one or more antenna panels of a first
functional unit, and the resource multiplexing type is used by a
first node to determine resources of one or more antenna panels of
the second functional unit; and
[0200] a transceiver module 1120, configured to send the first
indication information to the first node.
[0201] In an optional implementation, the transceiver module 1120
is further configured to:
[0202] send resource configuration information to the first node,
where the resource configuration information is used to indicate
resources of the one or more antenna panels of the first functional
unit in the first node.
[0203] In an optional implementation, the transceiver module 1120
is further configured to receive second indication information sent
by the first node, where the second indication information is used
to indicate a resource multiplexing type supported between the
second functional unit and each antenna panel of the first
functional unit; or the second indication information is used to
indicate a resource multiplexing type supported between the second
functional unit and a first antenna panel of the first functional
unit, and the first antenna panel represents an antenna panel whose
direction is the same as a direction of an antenna panel used by
the second functional unit; or the second indication information is
used to indicate a resource multiplexing type supported between the
second functional unit and a second antenna panel of the first
functional unit, and the second antenna panel represents an antenna
panel whose direction is different from a direction of an antenna
panel used by the second functional unit.
[0204] That the processing module 1110 is configured to determine
the first indication information includes:
[0205] determining, by the second node, the first indication
information based on the second indication information.
[0206] Optionally, the first functional unit is a mobile terminal
MT functional unit, and the second functional unit is a distributed
unit DU. Alternatively, the first functional unit is a distributed
unit DU, and the second functional unit is a mobile terminal MT
functional unit.
[0207] It should be understood that the data transmission apparatus
1100 according to this embodiment of this application may
correspond to the method of the second node in the foregoing method
embodiments, for example, the method in FIG. 11. In addition, the
foregoing and other management operations and/or functions of the
modules in the apparatus 1100 are respectively used to implement
corresponding steps of the method of the second node in the
foregoing method embodiments. Therefore, beneficial effects in the
foregoing method embodiments may also be implemented. For brevity,
details are not described herein again.
[0208] It should be further understood that the modules in the
apparatus 1100 may be implemented in a form of software and/or
hardware. This is not specifically limited. In other words, the
apparatus 1100 is presented in a form of a functional module. The
"module" herein may be an application-specific integrated circuit
ASIC, a circuit, a processor and a memory that execute one or more
software or firmware programs, an integrated logic circuit, and/or
another component that can provide the foregoing functions.
Optionally, in a simple embodiment, a person skilled in the art may
figure out that the apparatus 1100 may be in a form shown in FIG.
12. The processing module 1110 may be implemented by using a
processor 1201 shown in FIG. 12. The transceiver module 1120 may be
implemented by using a transceiver 1203 shown in FIG. 12.
Specifically, the processor is implemented by executing a computer
program stored in the memory. Optionally, when the apparatus 1100
is a chip, a function and/or an implementation process of the
transceiver module 1120 may alternatively be implemented by a pin,
a circuit, or the like. Optionally, the memory is a storage unit in
the chip, for example, a register or a buffer. The storage unit may
alternatively be a storage unit that is in the computer device and
that is located outside the chip, for example, the memory 1202
shown in FIG. 12.
[0209] FIG. 12 is a schematic structural diagram of a resource
configuration apparatus 1200 according to an embodiment of this
application. As shown in FIG. 12, the apparatus 1200 includes a
processor 1201.
[0210] In a possible implementation, the processor 1201 is
configured to determine first indication information, where the
first indication information is used to indicate a resource
multiplexing type between a second functional unit and each of one
or more antenna panels of a first functional unit, and the resource
multiplexing type is used by a first node to determine resources of
one or more antenna panels of the second functional unit: and the
processor 1201 is further configured to invoke an interface to
perform the following action: sending the first indication
information to the first node.
[0211] It should be understood that the processor 1201 may invoke
the interface to perform the foregoing receiving and sending
actions. The invoked interface may be a logical interface or a
physical interface. This is not limited. Optionally, the physical
interface may be implemented by using a transceiver. Optionally,
the apparatus 1200 further includes a transceiver 1203.
[0212] Optionally, the apparatus 1200 further includes a memory
1202. The memory 1202 may store program code in the foregoing
method embodiments, so that the processor 1201 invokes the program
code.
[0213] Specifically, if the apparatus 1200 includes the processor
1201, the memory 1202, and the transceiver 1203, the processor
1201, the memory 1202, and the transceiver 1203 communicate with
each other by using an internal connection path, to transfer a
control signal and/or a data signal. In a possible design, the
processor 1201, the memory 1202, and the transceiver 1203 may be
implemented by using a chip, and the processor 1201, the memory
1202, and the transceiver 1203 may be implemented in a same chip,
or may be separately implemented in different chips, or functions
of any two of the processor 1201, the memory 1202, and the
transceiver 1203 are implemented in one chip. The memory 1202 may
store program code, and the processor 1201 invokes the program code
stored in the memory 1202, to implement a corresponding function of
the apparatus 1200.
[0214] It should be understood that the apparatus 1200 may be
further configured to perform another step and/or operation on the
second node side in the foregoing embodiments. For brevity, details
are not described herein again.
[0215] The method disclosed in the embodiments of this application
may be applied to a processor or may be implemented by a processor.
The processor may be an integrated circuit chip and has a signal
processing capability. In an implementation process, steps in the
foregoing method embodiments can be implemented by using a hardware
integrated logical circuit in the processor, or by using
instructions in a form of software. The processor may be a general
purpose processor, a digital signal processor (digital signal
processor, DSP), an application-specific integrated circuit
(application specific integrated circuit, ASIC), a field
programmable gate array (field programmable gate array, FPGA) or
another programmable logic device, a discrete gate, a transistor
logic device, a discrete hardware component, a system on chip
(system on chip, SoC), a central processing unit (central processor
unit, CPU), a network processor (network processor, NP), a digital
signal processing circuit (digital signal processor, DSP), a micro
controller unit (micro controller unit, MCU), a programmable
controller (programmable logic device, PLD), or another integrated
chip. The processor may implement or perform the methods, the
steps, and logical block diagrams that are disclosed in the
embodiments of this application. The general purpose processor may
be a microprocessor, or the processor may be any conventional
processor or the like. Steps of the methods disclosed with
reference to the embodiments of this application may be directly
executed and accomplished by using a hardware decoding processor,
or may be executed and accomplished by using a combination of
hardware and software modules in the decoding processor. A software
module may be located in a mature storage medium in the art, such
as a random access memory, a flash memory, a read-only memory, a
programmable read-only memory, an electrically erasable
programmable memory, or a register. The storage medium is located
in the memory, and the processor reads information in the memory
and completes the steps in the foregoing methods in combination
with hardware of the processor.
[0216] It may be understood that the memory in the embodiments of
this application may be a volatile memory or a nonvolatile memory,
or may include a volatile memory and a nonvolatile memory. The
nonvolatile memory may be a read-only memory (read-only memory,
ROM), a programmable read-only memory (programmable ROM, PROM), an
erasable programmable read-only memory (erasable PROM, EPROM), an
electrically erasable programmable read-only memory (electrically
EPROM, EEPROM), or a flash memory. The volatile memory may be a
random access memory (random access memory. RAM), used as an
external cache. Through example but not limitative description,
many forms of RAMs may be used, for example, a static random access
memory (static RAM, SRAM), a dynamic random access memory (dynamic
RAM, DRAM), a synchronous dynamic random access memory (synchronous
DRAM, SDRAM), a double data rate synchronous dynamic random access
memory (double data rate SDRAM, DDR SDRAM), an enhanced synchronous
dynamic random access memory (enhanced SDRAM, ESDRAM), a
synchronous link dynamic random access memory (synchlink DRAM,
SLDRAM), and a direct rambus dynamic random access memory (direct
rambus RAM, DR RAM). It should be noted that the memory of the
systems and methods described in this specification includes but is
not limited to these and any memory of another appropriate
type.
[0217] According to the method provided in the embodiments of this
application, this application further provides a computer program
product. The computer program product includes computer program
code. When the computer program code is run on a computer, the
computer is enabled to perform the method in any one of the
embodiments shown in FIG. 3 to FIG. 8A and FIG. 8B.
[0218] According to the method provided in the embodiments of this
application, this application further provides a computer-readable
medium. The computer-readable medium stores program code. When the
program code is run on a computer, the computer is enabled to
perform the method in any one of the embodiments shown in FIG. 3 to
FIG. 8A and FIG. 8B.
[0219] According to the method provided in the embodiments of this
application, this application further provides a system, including
the foregoing first node and second node.
[0220] It should be understood that in the embodiments of this
application, numbers "first", "second", and the like are merely
used to distinguish between different objects, for example, to
distinguish between different nodes or indication information, and
do not constitute a limitation on the scope of the embodiments of
this application. The embodiments of this application are not
limited thereto.
[0221] It should further be understood that the term "and/or" in
this specification describes only an association relationship for
describing associated objects and represents that three
relationships may exist. For example, A and/or B may represent the
following three cases: Only A exists, both A and B exist, and only
B exists. In addition, the character "/" in this specification
generally indicates an "or" relationship between the associated
objects.
[0222] A person of ordinary skill in the art may be aware that, in
combination with the examples described in the embodiments
disclosed in this specification, units and algorithm steps may be
implemented by electronic hardware or a combination of computer
software and electronic hardware. Whether the functions are
performed by hardware or software depends on particular
applications and design constraints of the technical solutions. A
person skilled in the art may use different methods to implement
the described functions for each particular application, but it
should not be considered that the implementation goes beyond the
scope of this application.
[0223] It may be clearly understood by a person skilled in the art
that, for the purpose of convenient and brief description, for a
detailed working process of the foregoing system, apparatus, and
unit, refer to a corresponding process in the foregoing method
embodiments, and details are not described herein again.
[0224] In the several embodiments provided in this application, it
should be understood that the disclosed system, apparatus, and
method may be implemented in other manners. For example, the
described apparatus embodiments are merely an example. For example,
the unit division is merely logical function division and may be
other division in actual implementation. For example, a plurality
of units or components may be combined or integrated into another
system, or some features may be ignored or not performed. In
addition, the displayed or discussed mutual couplings or direct
couplings or communication connections may be implemented by using
some interfaces. The indirect couplings or communication
connections between the apparatuses or units may be implemented in
electronic, mechanical, or other forms.
[0225] The units described as separate parts may or may not be
physically separate, and parts displayed as units may or may not be
physical units, may be located in one position, or may be
distributed on a plurality of network units. Some or all of the
units may be selected based on actual requirements to achieve the
objectives of the solutions of the embodiments.
[0226] In addition, functional units in the embodiments of this
application may be integrated into one processing unit, or each of
the units may exist alone physically, or two or more units are
integrated into one unit.
[0227] When the functions are implemented in a form of a software
functional unit and sold or used as an independent product, the
functions may be stored in a computer-readable storage medium.
Based on such an understanding, the technical solutions of this
application essentially, or the part contributing to the prior art,
or some of the technical solutions may be implemented in a form of
a software product. The software product is stored in a storage
medium, and includes several instructions for instructing a
computer device (which may be a personal computer, a server, or a
network device) to perform all or some of the steps of the methods
described in the embodiments of this application. The foregoing
storage medium includes: any medium that can store program code,
such as a USB flash drive, a removable hard disk, a read-only
memory (read-only memory, ROM), a random access memory (random
access memory, RAM), a magnetic disk, or an optical disc.
[0228] The foregoing descriptions are merely specific
implementations of this application, but are not intended to limit
the protection scope of this application. Any variation or
replacement readily figured out by a person skilled in the art
within the technical scope disclosed in this application shall fall
within the protection scope of this application. Therefore, the
protection scope of this application shall be subject to the
protection scope of the claims.
* * * * *